As many of you have brought to my attention, Cenozoic South America has had multiple land predators larger than the largest Cenozoic dinosaur. That claim came up in my research, but is clearly false. Thank you for helping me make this correction. Happy Dinosaur December!
@@ClintsReptiles I wasn't gonna mention it cuz I didn't want to be "that guy" but yeah... Sebecids. Not just the largest terrestrial carnivore in South America during the Cenozoic, the largest terrestrial carnivores of the Cenozoic. Full stop. 👀
Hey Clint Laidlaw, Why don't you get to think of a suggestion and creating a RUclips Videos all about the 🪲Phylogeny Group Of Beetles🪲on the next Clint's Reptiles on the next Saturday coming up next?!⭐️⭐️⭐️⭐️⭐️👍👍👍👍
Hey Clint Laidlaw, Why don't you get to think of a suggestion and creating a RUclips Videos all about the 🪼Phylogeny Group Of Jellyfish🪼on the next Clint's Reptiles on the next Saturday coming up next?!⭐️⭐️⭐️⭐️⭐️👍👍👍👍👍
As someone who kept telling my classmates in 5th grade that birds are dinosaurs, and then being laughed at... Seeing a video called "10 biggest dinosaurs in the Cenozoic (ya know, the time of *mammals*)", brings a lot of pleasure to my soul. Thank you, Clint, for this great Christmas gift, keep up the good work ^^
They'd be the same people who would laugh at the fact that we came from therapsids. "Two related animals through evolution?! Pfft,, oh PLEASE! They look sooo totally different from each other despite all the scientific evidences, ain't no WAY they are related! But I still believe that platypuses and dogs are related because there are scientific evidences saying they're both mammals, even though they look different :3"
I was gonna scold Clint on lumping prehistoric critters all as dinos, but realized these are all birds(dinos)😂 Clint is too professional to make such a silly mistake. Good video to wake up to on my 27th bday!
I really like that you give us non metric people the english version. It makes the videos so much more enjoyable when I can understand the true measurements.
Actually, it's the American version. Although in England (y'know, where English comes from) older folk like me still habitually use imperial measurements, we fully understand metric too, and of course younger people were/are all schooled in metric. When 'English' novels are translated into French and German (for instance), their publishers say on the copyright pages "From the English" or "From the American" (in the approprriate languages) as applicable. They have a point.
I would be really interested in a video exclusively about the demon ducks and how they evolved. It would also be really cool to cover bird diversification during the cenozoic and how we arrived at the modern lineages
Love the terror birds! In the Patreon extra video we learned some of the work that went into making this list accurate. THANK YOU. I like knowing my science video consumption is accurate, not just sensational.
It should be noted that the "official" weight estimates for pretty much all the giant terror birds are likely MASSIVE underestimates due to incorrectly assuming they had similar proportions as ostriches, when in reality they had much shorter necks and a heavier build (as seen by the remains of Paraphysornis, the only big terror bird with well-preserved remains). So things like Titanis or Kelenken would likely have been in the 250-300kg range, or about twice as much as the most frequently cited estimates, meaning they should be higher in the rankings than this. Even Paraphysornis almost certainly exceeded 200kg. And in case anyone brings this up; terror birds were not outcompeted by carnivoran mammals. They were already in terminal decline before that even became a factor, and the one large terror bird that did encounter carnivoran competition (Titanis) was the one that evolved in carnivoran-infested North America to start with, which would only make sense if it could successfully compete with them.
There’s supposedly trace fossil evidence of an early form of Titanis in California that was smaller than the Florida version… and earlier, suggesting that somehow terror birds got to North America earlier than expected, and that it managed to grow and become larger and more powerful even in the face of competition by mammalian carnivores. Smilodon wasn’t “allowed” to grow to large sizes until after Titanis went extinct.
Thank you for the info, I was wondering why their weight always seemed a bit skimpy! Although take into account like modern birds some would fill different niches. Kelenken was noted for it's long legs, making it heavy would shatter its legs if it tried to run. If you could direct me to some papers discussing the weight dispute I'd love to read on them !
@@stephanybrown3226 Kelenken actually wasn't suited for running (by terror bird standards that is; it could still do 55+kmh so not something you could ever run away from), and had relatively robust legs like other giant terror birds; see Angst & Buffetaut, 2017
As one of your many Patreon supporters, I would absolutely love to see more content on the Cenozoic. It is such an ignored era. But the organisms are awesome!
You, humans, continue to complain about the harsh adaptations of your native organisms, but this is EXACTLY what happens when you wipe out the megafauna and force creatures to adapt with different mechanisms to survive.
Fantastic video as always! Terror Birds are fascinating animals! Along with all the South American fauna. There's a lot of debate about whether humans did or did not ever encounter them. Only one species ever made it's way into North America that we know of (Titanis walleri) and so far the evidence suggests it disappeared before humans arrived in the Americas. So more than likely if humans did encounter one of these birds, it would have been in their original native range of South America. Sadly we see this for most of the animals that spread north during the great Biotic Interchange. The only mammals left in NA whos ancestors came from SA are Opossums and Armadillos.
@anautisticswede6748 Yeah, I wasn't gonna mention it but technically the Sebecids are the largest terrestrial carnivores of the Cenozoic Era. BUT they aren't Dinosaurs despite being Archosaurs through Phylogenetic rules. So they wouldn't count for this video.
@@PaleoAnalysis true but i said that the terrorbird was the largest predator of south America during that time unless I heard him wrong. So no I know they would not count for this list. He should just have said that they were the second largest.
@@bkjeong4302 They did! We have evidence of both lasting in North America until around the end of the Ice Age. Unfortunately we do not have any evidence to suggest that Terror Birds survived nearly as long. However, I would like to add that the fossils we have of Titans are so fragmentary that I could probably fit all the fossils ever found of this species in the back seat of my car! So we definitely do not have the whole story as of right now.
This video is SOO stinkin’ RAD MAN!! I didn’t even realize how much I’m into this kind of thing, but this video is my cup of tea served right up my alley. Thanks @Clint’s Reptiles!
Maybe Gastornas specialized in the old style avocados (which were more seed than pulp), or a fruit similar to a coconut with a hard shell. As for reptiles not being as popular as other videos . .. I found Clint's Reptiles via the Octopus video, and I went through all the other videos before I ran out of others in your catalog...and then I started watching them. Now I love reptiles and subscribe to other Reptile RUclipsrs. So, even if the reptile videos aren't as popular, I'm glad they're around
I was also wondering that. They'd definitely need bite force if they were just crushing them instead of chipping at them more like parrots do with the seeds they munch on.
Honestly i kind of miss the pet reptile videos. I know you still do them, but its how i found this channel and part of the reason i got into reptiles. Have you done an animal tour at all? I would love to see everything around your business and meet all the animals. I understand if you don't want to because thats part of your business but id love to see it.
@@matyaskassay4346 Yes but purussaurus was a semi-aquatic predator. I think in the spirit of Clint's original statement barinasuchus is a good rebuttal, given its status as an exclusively terrestrial predator.
Gastornis was almost definitely herbivorous! Isotope testing has shown it feed on tough vegetation, hence the absurdly powerful beak. Like a finch, it would use the beak to crack tough plant foods like seeds, fruit, and nuts. Still a powerful animal, and by no means a gentle giant (I for one would not want to run into a territorial finch-goose taller than me). Great video Clint! I love Cenozoic dinosaurs!
The new Utah NHL team should have named themselves the Demon Ducks. What a missed opportunity! Also- loved this video. Would love to see more like this in the future
I love all the video formats. My love of reptiles is what brought me to this channel, but I love learning about other animals. People who say they don't like certain formats or topics of a RUclipsr's videos reminds me of people who say they love cheese but only eat mild cheddar.
Loved this videos. Extinct birds is one of my special interests, so I knew from the start that Elephant birds would make it right to the top! Also, largest egg! 2 gallons!
I loved this video! I wasn't very interested in birds or dinos but this video really changed that. I also wanted you to know that at 2:54 mins the image used is AI generated! But this video was great, Happy Holidays!
There's a video of a couple guys cooking a whole ostrich. They had to use a professional BBQ smoker, as it was the only cooker big enough. Enjoy! Best Ever Food Review Show ruclips.net/video/FScPZ73Cx78/видео.html
I love this video There are so many new animals I never knew existed. I also love reptiles. Imagining what pressures must've happened to create anatomical structures is fascinating and some are so darn cute
0:03 Imagine Clint jump scaring you like this in a dark alley then just going into spiel about Dinosaurs! 😂🤣😂 Sorry the image just popped into my head after the intro! 😂
i enjoyed this video a lot! i really was fascinated by the animals that were likely driven to extinction by humans, as i think an animal so large would be beneficial to keep and farm. it is sad that we never got to see moa farms
Remember, when we watch videos about birds, we *are* showing love for reptiles. Now excuse me while I count the dinosaurs in my backyard for Project Feederwatch. 😀
As an Australian, I enjoyed your inclusion of the Demon Ducks. I often wonder if the indigenous tales of the rainbow serpent may refer to a mega snake like an antipodean version of titanaboa?
I still enjoy your phylogeny videos the most. Chelicerata! Panarthropoda! I would love to see one or more videos on basal eukaryotes, tho that would open a huge can of worms.
i have no idea what the first humans arriving in australia have called that new land but i guess it would tranlate roughly to somethiing like "the land where the biggest things all taste like chicken"
I remember for a bit I used "Demon Duck of Doom" as a character name for a game. Everyone wondered where I got it. Also, swans are WAY more aggressive than geese, and they have a wider range of attack. I'd rather go up against a goose than a swan. Geese will bluff more than actually attack. Swans will follow through. I feel like the demon ducks would follow through.
I once saw some AIslop paleo video where terrorbirds were mispronounced by the robit speech module as "forest rockets" and I can't ever call them anything else.
Contrary to popular belief, competition with mammalian carnivores wasn’t the cause of Titanis’ extinction. Even by virtue of older 150 kg mass estimates, which are based off of ostriches and thus severely underestimate the mass of this bird, it was still larger than any mammalian predator it coexisted with, with the next largest carnivore alive at that time, Xenosmilus, being around 100 kg at the time. Moreover, based on newer, more reasonable volumetric estimates based on related phorusrhacids, Titanis, with a weight of around 250 kg (conservatively) by way of these newer estimates, was much larger than any mammalian carnivore it coexisted with. Simply put, it wasn’t outcompeted by mammalian predators because no mammal was big enough to challenge it. Instead, the collapse of forest ecosystems, namely the longleaf pine flat wood ecosystem it preferred, was what killed off Titanis, as well as fellow forest specialist Xenosmilus, which lasted long enough to outlast Titanis and become top predator in its stead for a brief period but not long enough to escape the impacts of its habitat collapsing. Smilodon, specifically S. gracilis was able to survive because, prior to Titanis’ extinction, it was a habitat generalist and was comfortable within open habitats to a greater extent than the terror bird was, and thus was relatively unaffected by the collapse of the forest ecosystem.
Thank you for this video, i didn't know some of the birds you mentioned and was unclear about the proportions of them all since media doesn't always agree on wich are the largest. Petition to make a phyilogeny video(with all available data) about the families of all the birds(genera by genera, maybe species?) that made it to this video, including pelagornis. To evoid competition you might want to nich partition the series with other educational content creators, like PaleoAnalysis and YourDinasoursAreWrong from the aniversarie thing, i follow both, anyone interest should check them out. I also like Ben G Thomas, RaptorChatter, Dr. Polaris and EDGEScience. There are many other great creators of course, this are the ones i can remenber the names of right now. Keep it going😊❤
There's a few episodes of PBS Eons that go into the evolution of beaks. One where they talk about bird evolution during the mesozoic, and another where they talk about the evolution of teeth, and then why various lineages lost them, including birds (and turtles, and frogs)
Could we count Dreadnoughtus, since they probably survived at least into the first few years of the Cenozoic? Depends on when the Cenozoic exactly begins, I suppose
Considering how close they lived to Chicxulub, and their size, a few years feels like it might be a bit of an overestimate. But at the same time, the standard delineation is precisely at the moment of impact (hence the name of "Survival in the first hours of the Cenozoic", one of the most delightfully ominous titles for a research article ever written), so technically speaking, every then-extant dinosaur that wasn't instantly annihilated made it into the Cenozoic.
Hey Clint, I enjoyed the video as always! But I can’t seem to find a source that says that Paraphysornis existed to about 1 million years ago. There’s the other South American terror bird Devincenzia that may have existed close to that date but so far I haven’t seen anything for Paraphysornis. Could you please share the source that you used? Also, I also don’t think that any substantially large terror birds were known to coexist with humans by the time we got to the Americas. I think that the latest genus was the South American Psilopterus, which was no more than 3-4 feet tall.
Clint, lemme just say... you could make a video where you do absolutely nothing but sit motionless for an hour and stare into the camera, and I'll like the video. I love ALL your videos! Please keep them coming!
Clint, I love your work, and your vids are a great listen when I'm at my job, but the initial claim of the terror birds being the largest south american predators since the nonavian dinosaurs is incorrect. The largest south american predator, and most likely of the entire Cenozoic era, was the Barinasuchus, a terrestrial relative of today's crocodilians. It's entire genus, the Sebecids, were actually the latest surviving non crocodylomorph crocodilians. I'd actually very much enjoy seeing you explore the crazy world of ancient crocodile relatives one day; they went nuts in the Mesozoic and early Cenozoic in terms of body plans and niches. Anyway, I hope you've a great day and wish you a belated Christmas and great New Year.
The beak shape and bite strength of the Gastornis reminds me of Darwin's finches, specifically the one with the largest beak that ate nuts. Could this be a nut cracking dinosaur?
They'd have to somehow start giving birth to live young so they wouldn't have to return to land to lay eggs. That's what the marine reptiles (including a fully aquatic crocodile, which of course was closer related to (false) penguins than mosasaurs and ichthyosaurs) had to do. Otherwise they would "only" get as large as the largest sea turtles.
(False) penguins already tried that niche. You used to have 12/15 foot penguins back 40, 50 million years ago. They were pretty much gone by ~20 million years ago. We actually think they were outcompeted by cetaceans and pinnipeds (and probably also eaten by them). Also speaking of extinctions caused by pinnipeds, nautiloids, the earliest lineage of cephalopods, going all the way back to the Cambrian, have been almost driven to extinction over the last 30 million years specifically by pinnipeds. They've been around since the dawn of animals, and in seals they have finally met their match. The only extant nautiloids live in the one area of the ocean with no pinnipeds (the Indo west Pacific)
So slight issue with the Terror Bird segment. When Clint mentioned the genus, he used the name "Phorusrhachidae". That's the family name of the entire group based on the genus Phorusrhachos, which is lighter than an ostrich. It should be worth noting that the tallest named terror bird in the family was Kelenken guillermoi at 10 feet tall with the largest known skull of any bird at 28 inches (2.3 feet). Of course, there are remains of a larger bird from Columbia that have yet to be named from an animal 20% larger. The current heavyweight is the North American Titanis at over 600 lbs. Also, while it's possible that terror birds lasted until relatively recently, the larger species like Titanis had long since gone extinct prior to the first humans arriving in the New World. The last Phorusrhachid to exist was the small genus Psilopterus, which were pretty hardy givem their 29 million year existence until around 70000 years ago or so. I highly doubt they would've seen humans as a meal any more than a modern seriema.
(Warning, for people who don't want to read about big birds eating people too much, and what said people would be looking at while being eaten... don't read the rest) 1:30 (I know you meant it figuratively but^^) I am not so sure about the beak being the last thing you see. Sure, if they kill you like a lion does. But I don't know, I got a feeling they don't. Wich would mean that they have to pin you down some how while eating your guts. If they where to do that, I think it's likely for them to put a foot on your chest or neck, somewhere like that, with the birds head facing towards your legs, thus the last thing you'd see would be what's under it's tail. The other end of the bird tupe, not the beak. :/
As many of you have brought to my attention, Cenozoic South America has had multiple land predators larger than the largest Cenozoic dinosaur. That claim came up in my research, but is clearly false. Thank you for helping me make this correction.
Happy Dinosaur December!
@@ClintsReptiles I wasn't gonna mention it cuz I didn't want to be "that guy" but yeah... Sebecids. Not just the largest terrestrial carnivore in South America during the Cenozoic, the largest terrestrial carnivores of the Cenozoic. Full stop. 👀
Hey Clint Laidlaw, Why don't you get to think of a suggestion and creating a RUclips Videos all about the 🪲Phylogeny Group Of Beetles🪲on the next Clint's Reptiles on the next Saturday coming up next?!⭐️⭐️⭐️⭐️⭐️👍👍👍👍
Hey Clint Laidlaw, Why don't you get to think of a suggestion and creating a RUclips Videos all about the 🪼Phylogeny Group Of Jellyfish🪼on the next Clint's Reptiles on the next Saturday coming up next?!⭐️⭐️⭐️⭐️⭐️👍👍👍👍👍
Yea I came to mention Barinasuchus 😂
@@HassanMohamed-rm1cb You are EVERYWHERE
As someone who kept telling my classmates in 5th grade that birds are dinosaurs, and then being laughed at... Seeing a video called "10 biggest dinosaurs in the Cenozoic (ya know, the time of *mammals*)", brings a lot of pleasure to my soul.
Thank you, Clint, for this great Christmas gift, keep up the good work ^^
They'd be the same people who would laugh at the fact that we came from therapsids. "Two related animals through evolution?! Pfft,, oh PLEASE! They look sooo totally different from each other despite all the scientific evidences, ain't no WAY they are related! But I still believe that platypuses and dogs are related because there are scientific evidences saying they're both mammals, even though they look different :3"
@@minseo19honestly I think therapsids were mammals like how platypuses and echidnas are mammals
Now every child knows that
@@Fabey93true
@@Halfcrabs maybe not in America or certain bubbles. But in the kindergarten of my son everyone knows that 😅
I was gonna scold Clint on lumping prehistoric critters all as dinos, but realized these are all birds(dinos)😂 Clint is too professional to make such a silly mistake.
Good video to wake up to on my 27th bday!
Happy birthday!
@@ClintsReptiles thank you!
Snap
Can we get a Clint’s Academy Demon Ducks tshirt for Christmas?
I want one myself!
@@ClintsReptilesplease make it happen!
@@ClintsReptilesbetter find an artist to make a demonic duck!
If it ends up looking like an actual varsity team t-shirt, that’s an easy purchase for me LOL.
I would absolutely buy one if Clint sold them
I really like that you give us non metric people the english version. It makes the videos so much more enjoyable when I can understand the true measurements.
Actually, it's the American version. Although in England (y'know, where English comes from) older folk like me still habitually use imperial measurements, we fully understand metric too, and of course younger people were/are all schooled in metric.
When 'English' novels are translated into French and German (for instance), their publishers say on the copyright pages "From the English" or "From the American" (in the approprriate languages) as applicable. They have a point.
I would be really interested in a video exclusively about the demon ducks and how they evolved. It would also be really cool to cover bird diversification during the cenozoic and how we arrived at the modern lineages
The true terror bird is the cockatiel ( at least in spirit )
No bird causes more terror for me than the magpie.
Truly a terrifying bird
My green cheek conures are definitely demon dinos in their own right. So cute. So bitey.
Agreed. I share my house with two of them and they're pure evil and wouldn't care if I died. I love them though.
I mean, the parrots and the terror birds are weirdly closely related lol
7:20 Now they are no moa, wow
"But sir, it's a paraphyletic clade."
"There's no such thing."
[Incinerates employee with Lazer eyes]
Sargent Johnson is that you!?
This is truly the hagfish of all dinosaur videos
My favorite part was when Clint said “it’s Hagfishin time” and hagfished all over the place
Love the terror birds! In the Patreon extra video we learned some of the work that went into making this list accurate. THANK YOU. I like knowing my science video consumption is accurate, not just sensational.
It should be noted that the "official" weight estimates for pretty much all the giant terror birds are likely MASSIVE underestimates due to incorrectly assuming they had similar proportions as ostriches, when in reality they had much shorter necks and a heavier build (as seen by the remains of Paraphysornis, the only big terror bird with well-preserved remains). So things like Titanis or Kelenken would likely have been in the 250-300kg range, or about twice as much as the most frequently cited estimates, meaning they should be higher in the rankings than this. Even Paraphysornis almost certainly exceeded 200kg.
And in case anyone brings this up; terror birds were not outcompeted by carnivoran mammals. They were already in terminal decline before that even became a factor, and the one large terror bird that did encounter carnivoran competition (Titanis) was the one that evolved in carnivoran-infested North America to start with, which would only make sense if it could successfully compete with them.
There’s supposedly trace fossil evidence of an early form of Titanis in California that was smaller than the Florida version… and earlier, suggesting that somehow terror birds got to North America earlier than expected, and that it managed to grow and become larger and more powerful even in the face of competition by mammalian carnivores. Smilodon wasn’t “allowed” to grow to large sizes until after Titanis went extinct.
Thank you for the info, I was wondering why their weight always seemed a bit skimpy! Although take into account like modern birds some would fill different niches. Kelenken was noted for it's long legs, making it heavy would shatter its legs if it tried to run. If you could direct me to some papers discussing the weight dispute I'd love to read on them !
@@stephanybrown3226 Kelenken actually wasn't suited for running (by terror bird standards that is; it could still do 55+kmh so not something you could ever run away from), and had relatively robust legs like other giant terror birds; see Angst & Buffetaut, 2017
@@stephanybrown3226 I mean it's not like people are saying it was the weight of an elephant or something. I'm sure its legs would be fine
Cenozoic dinosaurs mentioned 🔥🔥🔥🦅🐧🦃🦆
As one of your many Patreon supporters, I would absolutely love to see more content on the Cenozoic. It is such an ignored era. But the organisms are awesome!
Demon Ducks lived in Australia. Of course they did. The surprise is they were not venomous. We think.
You, humans, continue to complain about the harsh adaptations of your native organisms, but this is EXACTLY what happens when you wipe out the megafauna and force creatures to adapt with different mechanisms to survive.
7:09 This week's best joke 😅
Clint went there. Perfectly executed.
Fantastic video as always!
Terror Birds are fascinating animals! Along with all the South American fauna. There's a lot of debate about whether humans did or did not ever encounter them. Only one species ever made it's way into North America that we know of (Titanis walleri) and so far the evidence suggests it disappeared before humans arrived in the Americas.
So more than likely if humans did encounter one of these birds, it would have been in their original native range of South America.
Sadly we see this for most of the animals that spread north during the great Biotic Interchange. The only mammals left in NA whos ancestors came from SA are Opossums and Armadillos.
But i thought that the biggest predator in south America was a crockodile relative. (Cant spell the right something succia)
glyptodonts and ground sloths did encounter humans all the time in NA, though.
@anautisticswede6748 Yeah, I wasn't gonna mention it but technically the Sebecids are the largest terrestrial carnivores of the Cenozoic Era. BUT they aren't Dinosaurs despite being Archosaurs through Phylogenetic rules. So they wouldn't count for this video.
@@PaleoAnalysis true but i said that the terrorbird was the largest predator of south America during that time unless I heard him wrong. So no I know they would not count for this list. He should just have said that they were the second largest.
@@bkjeong4302 They did! We have evidence of both lasting in North America until around the end of the Ice Age. Unfortunately we do not have any evidence to suggest that Terror Birds survived nearly as long.
However, I would like to add that the fossils we have of Titans are so fragmentary that I could probably fit all the fossils ever found of this species in the back seat of my car! So we definitely do not have the whole story as of right now.
I am so happy you used the "no moa" joke. I remember it in a children's book about dinosaurs when i was a kid in the late 1980s.
Man, this was AWESOME! I’ve always wanted a video on THIS exact topic, but didn’t think I’d get one because it’s too niche.
But it's such a rad niche!
@ I’d say stinkin’ rad!
This video is SOO stinkin’ RAD MAN!! I didn’t even realize how much I’m into this kind of thing, but this video is my cup of tea served right up my alley. Thanks @Clint’s Reptiles!
I liked this one. I would like to see more like it.
Maybe Gastornas specialized in the old style avocados (which were more seed than pulp), or a fruit similar to a coconut with a hard shell. As for reptiles not being as popular as other videos . .. I found Clint's Reptiles via the Octopus video, and I went through all the other videos before I ran out of others in your catalog...and then I started watching them. Now I love reptiles and subscribe to other Reptile RUclipsrs. So, even if the reptile videos aren't as popular, I'm glad they're around
I was also wondering that. They'd definitely need bite force if they were just crushing them instead of chipping at them more like parrots do with the seeds they munch on.
That's what I was thinking, too.
Avocados are about the only fruit thats deadly poisenous to birds so i highly doubt it
The Bob Ross of the animal world.
"They're not terror birds, they're just a happy little man-eating accident." 😂
Now let’s give them a friend
Everyone: No!
I love all of your reptile videos! Reptiles are stinking rad!
I was and still am captivated by the phorushacos scene in Harryhausen'ds 'Mysterious Island.' Pure terror with stubby little wings.
Demon ducks have officially become the new pets of the channel just by existing
Any Saturday morning that starts out with Terror Birds, especially Kelanken is excellent!
Honestly i kind of miss the pet reptile videos. I know you still do them, but its how i found this channel and part of the reason i got into reptiles. Have you done an animal tour at all? I would love to see everything around your business and meet all the animals. I understand if you don't want to because thats part of your business but id love to see it.
It's dino December. By January it will be back to mostly reptiles.
The sebecids were the largest cenozoic South American predators, barinosuchus was a dasplatosaur sized notosuchian.
You forget that Purussaurus existed.
@@matyaskassay4346 Yes but purussaurus was a semi-aquatic predator. I think in the spirit of Clint's original statement barinasuchus is a good rebuttal, given its status as an exclusively terrestrial predator.
@@matyaskassay4346 i assumed he meant land predators because the black caiman also exists.
Terrific video. More like this would be appreciated.
I love this channel so much TO thank you for the stellar content
Awesome video!!
Oh man i have been waiting for this exact video for so long
Gastornis was almost definitely herbivorous! Isotope testing has shown it feed on tough vegetation, hence the absurdly powerful beak. Like a finch, it would use the beak to crack tough plant foods like seeds, fruit, and nuts.
Still a powerful animal, and by no means a gentle giant (I for one would not want to run into a territorial finch-goose taller than me).
Great video Clint! I love Cenozoic dinosaurs!
The new Utah NHL team should have named themselves the Demon Ducks. What a missed opportunity!
Also- loved this video. Would love to see more like this in the future
I just saw them play last night!
This looks awesome, pausing it so I can watch on the telly with my kids!
i will miss dinosaur december
I love all the video formats. My love of reptiles is what brought me to this channel, but I love learning about other animals.
People who say they don't like certain formats or topics of a RUclipsr's videos reminds me of people who say they love cheese but only eat mild cheddar.
Yay! Something to listen to on my way home on for the weekend. Terror birds should be the perfect thing to learn about right before bed.
I had a bad dream after seeing this. 😂
Loved this videos. Extinct birds is one of my special interests, so I knew from the start that Elephant birds would make it right to the top! Also, largest egg! 2 gallons!
Beautifull vidéo. I do like this new kind of vidéo. Have a good hollyday ans happy New years from Eastern Canada
Loved this video. Keep it up.
I loved this video! I wasn't very interested in birds or dinos but this video really changed that. I also wanted you to know that at 2:54 mins the image used is AI generated! But this video was great, Happy Holidays!
Thank you sir! I love the Terror Birds and Demon Ducks! I didn't think I would get this in December. This was probably my favorite gift this year.
My mind boggles with ideas on how to cook one of these monsters. Can you imagine the drumsticks 🍗….
There's a video of a couple guys cooking a whole ostrich. They had to use a professional BBQ smoker, as it was the only cooker big enough. Enjoy! Best Ever Food Review Show ruclips.net/video/FScPZ73Cx78/видео.html
Man, dinosaurs is so cool.
Definitely some of my favorite fish
Loved this one!
1:02 Phorusrhacids weren’t all in one genus, if I recall correctly.
He probably meant to say family.
I love this video There are so many new animals I never knew existed. I also love reptiles. Imagining what pressures must've happened to create anatomical structures is fascinating and some are so darn cute
I liked this format
0:03 Imagine Clint jump scaring you like this in a dark alley then just going into spiel about Dinosaurs! 😂🤣😂
Sorry the image just popped into my head after the intro! 😂
Fascinatongly informative video as always Clint, thank you so much!!!!!!!!!!😃👍🙏🙌👏👏👏🤝🤝🤝👍!!!!!!!
This was fun. I would definitely tune in for more like it.
I loved this video! Amazing! Also, I always thought geese were demon ducks but darn those actual demon ducks look terrifying.
loved this video and the new format.
I enjoyed this format!❤
Nice Clint! 🐤
i enjoyed this video a lot! i really was fascinated by the animals that were likely driven to extinction by humans, as i think an animal so large would be beneficial to keep and farm. it is sad that we never got to see moa farms
Remember, when we watch videos about birds, we *are* showing love for reptiles. Now excuse me while I count the dinosaurs in my backyard for Project Feederwatch. 😀
As an Australian, I enjoyed your inclusion of the Demon Ducks. I often wonder if the indigenous tales of the rainbow serpent may refer to a mega snake like an antipodean version of titanaboa?
The real question is whether an Elephant Bird would make a good pet.
I still enjoy your phylogeny videos the most. Chelicerata! Panarthropoda! I would love to see one or more videos on basal eukaryotes, tho that would open a huge can of worms.
i have no idea what the first humans arriving in australia have called that new land but i guess it would tranlate roughly to somethiing like "the land where the biggest things all taste like chicken"
What I learned from your videos:
1) These terror birds had a perforated acetabulum
2) They probably ate arthropods that had toxicognath
I remember for a bit I used "Demon Duck of Doom" as a character name for a game. Everyone wondered where I got it. Also, swans are WAY more aggressive than geese, and they have a wider range of attack. I'd rather go up against a goose than a swan. Geese will bluff more than actually attack. Swans will follow through. I feel like the demon ducks would follow through.
I'd say that shrikes are more demonic than geese, just not towards humans
Really like this one
This video ruled! One of my favorites
I once saw some AIslop paleo video where terrorbirds were mispronounced by the robit speech module as "forest rockets" and I can't ever call them anything else.
I don't think that counts as being "mispronounced"
Contrary to popular belief, competition with mammalian carnivores wasn’t the cause of Titanis’ extinction. Even by virtue of older 150 kg mass estimates, which are based off of ostriches and thus severely underestimate the mass of this bird, it was still larger than any mammalian predator it coexisted with, with the next largest carnivore alive at that time, Xenosmilus, being around 100 kg at the time.
Moreover, based on newer, more reasonable volumetric estimates based on related phorusrhacids, Titanis, with a weight of around 250 kg (conservatively) by way of these newer estimates, was much larger than any mammalian carnivore it coexisted with. Simply put, it wasn’t outcompeted by mammalian predators because no mammal was big enough to challenge it.
Instead, the collapse of forest ecosystems, namely the longleaf pine flat wood ecosystem it preferred, was what killed off Titanis, as well as fellow forest specialist Xenosmilus, which lasted long enough to outlast Titanis and become top predator in its stead for a brief period but not long enough to escape the impacts of its habitat collapsing. Smilodon, specifically S. gracilis was able to survive because, prior to Titanis’ extinction, it was a habitat generalist and was comfortable within open habitats to a greater extent than the terror bird was, and thus was relatively unaffected by the collapse of the forest ecosystem.
I'd love to hear the sounds these animals made.
Thank you for this video, i didn't know some of the birds you mentioned and was unclear about the proportions of them all since media doesn't always agree on wich are the largest. Petition to make a phyilogeny video(with all available data) about the families of all the birds(genera by genera, maybe species?) that made it to this video, including pelagornis. To evoid competition you might want to nich partition the series with other educational content creators, like PaleoAnalysis and YourDinasoursAreWrong from the aniversarie thing, i follow both, anyone interest should check them out. I also like Ben G Thomas, RaptorChatter, Dr. Polaris and EDGEScience. There are many other great creators of course, this are the ones i can remenber the names of right now. Keep it going😊❤
"The fans of Clint's Reptiles don't really like reptiles". Amazing
Great and interesting video!
"they could run faster than Tyrannosaurus rex" is that really high bar tho
W video Clint
Outstanding! Is there any video showing the evolution to beaks?
There's a few episodes of PBS Eons that go into the evolution of beaks. One where they talk about bird evolution during the mesozoic, and another where they talk about the evolution of teeth, and then why various lineages lost them, including birds (and turtles, and frogs)
@@TiggerIsMyCat , thank you!! I'm really curious about it.
The moas are no moa ...
Great video! My parrots enjoyed it too.
Loved it.
"Cenozoic" sounds like a long time ago, until you learn that it includes the present day
Cenozoic started a long time ago.
@turdfergusonisafunnyname702 in a galaxy far far away?
@@bubbajenkins123 yeah maybe where God exists.
Awesome video
Q: What does a very large terror bird eat for dinner?
A: Anything it wants.
Next Dino December, would you like to do a vid on the 10 smallest known non-avian dinosaurs? Or true avians that didn't survive Chicxulub?
I can imagine Clint reading the latest paleo news and sweating profusely over 3:42.
Could we count Dreadnoughtus, since they probably survived at least into the first few years of the Cenozoic? Depends on when the Cenozoic exactly begins, I suppose
Considering how close they lived to Chicxulub, and their size, a few years feels like it might be a bit of an overestimate. But at the same time, the standard delineation is precisely at the moment of impact (hence the name of "Survival in the first hours of the Cenozoic", one of the most delightfully ominous titles for a research article ever written), so technically speaking, every then-extant dinosaur that wasn't instantly annihilated made it into the Cenozoic.
Now I want to know which is the largest modern dino - I suspect it's the ostrich
Terrorbirds are my favorite dinosaurs of all time
The only big theropods to combine brains and brawn
Hey Clint, I enjoyed the video as always! But I can’t seem to find a source that says that Paraphysornis existed to about 1 million years ago. There’s the other South American terror bird Devincenzia that may have existed close to that date but so far I haven’t seen anything for Paraphysornis. Could you please share the source that you used?
Also, I also don’t think that any substantially large terror birds were known to coexist with humans by the time we got to the Americas. I think that the latest genus was the South American Psilopterus, which was no more than 3-4 feet tall.
So sad to see the end of Dinosaur December with Clint. It'll be back before I know it though. Happy holidays, yall :)
It's not over yet!
YAAAAAY
Clint, lemme just say... you could make a video where you do absolutely nothing but sit motionless for an hour and stare into the camera, and I'll like the video. I love ALL your videos! Please keep them coming!
Clint, I love your work, and your vids are a great listen when I'm at my job, but the initial claim of the terror birds being the largest south american predators since the nonavian dinosaurs is incorrect. The largest south american predator, and most likely of the entire Cenozoic era, was the Barinasuchus, a terrestrial relative of today's crocodilians. It's entire genus, the Sebecids, were actually the latest surviving non crocodylomorph crocodilians. I'd actually very much enjoy seeing you explore the crazy world of ancient crocodile relatives one day; they went nuts in the Mesozoic and early Cenozoic in terms of body plans and niches. Anyway, I hope you've a great day and wish you a belated Christmas and great New Year.
I wouldn't mess with any of the Dinosaurs mentioned in this video, because all of them have a high likelihood of potentially killing me.
The beak shape and bite strength of the Gastornis reminds me of Darwin's finches, specifically the one with the largest beak that ate nuts. Could this be a nut cracking dinosaur?
Those would have been scary nuts!
Make a ballet about this nutcracker
This is the stinking rad geek stuff that I love.
So you're saying geese were even more of a threat back then?
Now, that's scary!
Now we need a (false) penguin to grow to fill the niche of a cetacean... Give me the WHALGUIN
They'd have to somehow start giving birth to live young so they wouldn't have to return to land to lay eggs. That's what the marine reptiles (including a fully aquatic crocodile, which of course was closer related to (false) penguins than mosasaurs and ichthyosaurs) had to do. Otherwise they would "only" get as large as the largest sea turtles.
@andyjay729 yo when the penguin×Archelon coming then
(False) penguins already tried that niche. You used to have 12/15 foot penguins back 40, 50 million years ago. They were pretty much gone by ~20 million years ago. We actually think they were outcompeted by cetaceans and pinnipeds (and probably also eaten by them).
Also speaking of extinctions caused by pinnipeds, nautiloids, the earliest lineage of cephalopods, going all the way back to the Cambrian, have been almost driven to extinction over the last 30 million years specifically by pinnipeds. They've been around since the dawn of animals, and in seals they have finally met their match. The only extant nautiloids live in the one area of the ocean with no pinnipeds (the Indo west Pacific)
So slight issue with the Terror Bird segment. When Clint mentioned the genus, he used the name "Phorusrhachidae". That's the family name of the entire group based on the genus Phorusrhachos, which is lighter than an ostrich. It should be worth noting that the tallest named terror bird in the family was Kelenken guillermoi at 10 feet tall with the largest known skull of any bird at 28 inches (2.3 feet). Of course, there are remains of a larger bird from Columbia that have yet to be named from an animal 20% larger. The current heavyweight is the North American Titanis at over 600 lbs.
Also, while it's possible that terror birds lasted until relatively recently, the larger species like Titanis had long since gone extinct prior to the first humans arriving in the New World. The last Phorusrhachid to exist was the small genus Psilopterus, which were pretty hardy givem their 29 million year existence until around 70000 years ago or so. I highly doubt they would've seen humans as a meal any more than a modern seriema.
7:20. Well, well, well... if that's not the corniest pun ever... :D
(Warning, for people who don't want to read about big birds eating people too much, and what said people would be looking at while being eaten... don't read the rest)
1:30 (I know you meant it figuratively but^^) I am not so sure about the beak being the last thing you see. Sure, if they kill you like a lion does. But I don't know, I got a feeling they don't. Wich would mean that they have to pin you down some how while eating your guts. If they where to do that, I think it's likely for them to put a foot on your chest or neck, somewhere like that, with the birds head facing towards your legs, thus the last thing you'd see would be what's under it's tail. The other end of the bird tupe, not the beak. :/