Finch Nest RANSACKED by Cowbird Mother after Chick Dies
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- Опубликовано: 8 июл 2022
- This video depicts the unfortunate series of events that lead to this finch nest being abandoned. A brood parasite called a cowbird laid its egg in the finch nest that had 5 eggs in it. Cowbird chicks develop faster than most birds which means it hatches and starts growing sooner than the other chicks.This gives it a competitive advantage over the other chicks. The cowbird hatched and was being cared for by the finch parents while they waited for their eggs to hatch. 4 days after the cowbird hatched the finch eggs were due to start hatching. Unfortunately, the cowbird chick on this day was overfed which lead to it chocking and eventual suffocation. You might think this is a good thing since it is a parasite chick but it is not. Cowbird mothers watch over the nests they lay their eggs in. If the egg is removed or the chick dies, the cowbird mother will become hostile and aggressive towards the nest. This is exactly what happened as the cowbird began to attack and raid the nest. In 24 hours it had stolen 4 out of the 5 finch eggs. To ensure the demise of the nest it also pecked holes in the eggs which will cause the developing chicks to die. The finch mother tired to continue incubation but eventually had to abandon the nest since the eggs were taken or punctured. Nature can be brutal sometimes.
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#NestRaided #ChickDies #BirdNest #NestAttacked #EggsStolen #Cowbird 
Животные
So you're telling me that these birds lay their eggs in another birds nest so they can take care of it but still stick around and get mad if the child dies.
Correct
That’s insane 😬
sounds like a mother from da hood lol
“Omg you were so totally supposed to protect my child, like sister Omg why did you not love my child as equal as your kids. That’s racism at its finest.” -Mom
Yea they do that....they don't just DUMP AND GO....they keep an eye out on several nests because the blasted cowgirl may lay 10 or 12 eggs per breeding season.... they drop 1 in each nest and keep an eye on the baby....they KNOW WHICH NESTS AND WHICH BIRDS HAVE THIER OWN BABIES....if the foster bird pushes out her imposter child the cowgirl is vindictive....it will go kill the foster parents chicks abd in some cases rip up a nest to make them have to start over from scratch.....
Fun fact: Some birds, like robins and jays are evolving alongside cowbirds and can often recognize which egg is the cowbird egg and remove it. They then deal with any attacks by the cowbirds by attacking back.
Catbirds too
They also has the size to do so.
Yep it’s interesting how they adapt to realize the imposter egg, yet so many species cannot do that yet.
Good
What video is this
My grandmother was an avid birder. She taught me a workaround for dealing with cowbird eggs:
Take it out of the nest and shake it really hard and really well, then place it back in the nest.
Doing that damages the yolk, white, and other internal structures and the eggs are far less likely to hatch.
As long as the cowbird mom sees her egg, she'll leave the nest alone.
Once the eggs start hatching, there's a 50/50 chance the cowbird mom won't be able to recognize which chick was hers, or she thinks the firstborn is hers.
It's not perfect, but it's better than nothing.
Cowbirds are parasites but they are protected as a species. It is legal to kill house sparrow and starling eggs, but not cowbirds eggs.
Very good theory..... I'd like to see that put to the test....
@@ezstreete I would also like to see research and studies done, just to know if it actually works/how effective it is. I'm not sure how ethical it is though, since they are a native species (even if a lot of birders consider them a pesky one).
My grandparents had an INSANE number of cowbirds around their farm, and they actively worked to rebuild habitat and create nesting sites to rebuild the bird population after DDT was banned. My grandparents had a LOT of guilt for applying DDT to their fields back in the day, and my Grandfather spent what little free time he had improving his hedgerows and building nest boxes/bird houses.
Which makes me wonder if they had such high numbers of cowbirds compared to other species because the cowbirds weren't as susceptible to DDT? 🤔 Great. Another rabbit hole to go down! 🤣
Nice practice to do. Thanks
The hard part is actually finding and having reach to a bird's nest to check for cowbird egg.
Poor finches they looked so confused when their eggs disappeared 😭
They couldn't evan save the last
See with finch chicks, their crops are designed to expand as they fill up with food, and that puts them at no risk of choking on food. Cowbird chicks, however, dont have this built in storage pouch, so when the mother finch crams the baby with food, the throat becomes clogged and the chick dies
Yea, that is why the chick die wrong nest. Cowbirds usually put their eggs on songbirds nest that eat insects not like finches that eat seeds.
@@salvadorgarcia822
Why are cowbirds expanding their parasitism into finches, then? They’re going to have a high mortality rate and subsequently reduce the finch population as well, if they are too dependent on them locally that would be a disaster for them as well.
@@salvadorgarcia822 incorrect. Cowbird are seed eaters aswell. South americans ar ethe mostly insect eaters. The usa ones have a 50/50 diet. What almost 100% seed in winter
@@eldermillennial8330 he talking nonsense. The coebirds whats in the usa are on a 50/50 seed and insect diet. So a chick will survive on seeds. In winter they mostly eat seeds 🤦🏼♀️ south american species are known from being mostly insect eaters
Thats not true. They have crops what can expand.
Cowbird chose the wrong type of birds to lay its egg in. Finches are seed eaters and the baby has a crop that can be filled with a large amount of seed paste from the parent birds. Cow bird chicks are not designed to be seed eating or able to be fed the way finches feed their chicks, they don’t have a crop. Also finch chicks grow a lot faster and fledge in a much shorter time because of their small size and also the massive amounts of food they are fed. If the mother’s other eggs get destroyed the parent birds will just mate again and lay new eggs. The cowbird made the mistake of not putting its egg in a nest of a bird that eats the same diet and is fed the same way it needs to. But like others have said blue jays and robins are evolving to recognize the cowbird egg as not their own and will remove it if detected. So perhaps the cowbird mother used this nest due to no other choices available found.
Or it's a set up video by the owners of this channel trying out as many scenarios as possible for the ad rev and normally the cowbird wouldn't lay it's eggs in a finches nest.
@@michaelb4538 Dude - if the cowbird didn't lay her eggs in THAT nest - she wouldn't be sticking around it
It takes only a few minutes to figure this out.
it's mind-boggling that the cowbird mother got angry that it's baby died and got revenge by killing...
I was shocked to see what happened when I reviewed the footage
“Anger” and “ revenge” is a bit much. Cowbirds, like all birds, are programmed to act certain ways. It’s a way to,protect the species. They don’t think, you know.
@@Arieskie Correct. Humans are the only beings on earth gifted a thinking mind by God
@@Arieskie a few bird species have gone extinct due to parasitism. The parasites need to hurry up and die
@@aimanazminovich3602 There is no god. We're talking about evolution and animal instinct here.
Scientists refer to these as "mafia tactics", basically it's done to "encourage" the parents of the host to either not reject the baby or let it die.
It’s more encouragement to ensure the home nesters to breed again sooner.
It's like a bully demanding you don't flunk there homework
Seems like it would be a lot easier to just raise your own kid than go through all of that drama if it dies.
That's so vindictive- holy shit!
I was actually impressed with the finch mother for overfeeding the cowbird chick. They are essentially parasites of the bird world, and I appreciate that they have their own cycle, but I don't really feel bad lol. It's so interesting how the finch overfed him - it was a poetic justice. But man, the cowbird mother coming back to destroy the nest is so crazy vindictive for the animal kingdom!
Definition of 'entitlement'. They leave their chick in another's nest, watch to make sure it grows up, if it dies they 'claim compensation' by stealing the eggs so they can eat well enough to breed again.
even parasite bird chicks are awful; they will often crush or be throw out the brood of their adoptive parents
@@cottoncandykawaii2673 like the cuckoos in Europe those are even bigger
By destroying they make the parents to breed again so they can lay eggs again. Just as lion kill the cubs of other males
@@cottoncandykawaii2673 I know it's fucked up but at the sametime I find it fascinating,only because it's in their instinct to come out the egg with that behavior....like they are really programmed from birth to kill the competition smh I was at lost for words when I found out about these birds
People said they wherent as bad as cuckoos but some birds have learned to identify cuckoo eggs and kick them out before they do harm. With cowbirds there seems to be now way of fighting back. Cuckoos just ring the door bell and dash but the mother cow bird sticks around in case the foster birds try anything. How you do win against that? Not sure which is more evil…
Cuckoos are worse
The parent kills the mother cowbird in retaliation. Simple as that.
@@Frenchfrys17 Parasite chicks are usually much larger than their Host parents. The Cuckoo for example often targets song birds half its size. The host Species usually has little chance of winning in that match up due to size difference.
@@KittinPyro It's pretty simple: Don't feed the parasite chick. Don't care for the parasite chick. Make the parasite chick fall out of the nest if possible.
Have your chicks develop faster so they can leave the nest and then you can kill the parasite without the risk of reprisal.
Or raise the chick but permanently injure their wings so they cannot fly.
I wonder why the flinch parents don't take turns guarding the nest.
So if you see a cowbird, kill it, got it!
😂
They are necessary evil. Cuckoo and cowbirds eat insects/caterpillars that are too venomous for ordinary birds. Who knows? Maybe the poison did something to their gene?
Illegal. It's legal to kill starlings and house sparrows, though. What's ironic is that cowbirds probably kill more eggs and nestlings than house sparrows, since they are obligate parasites. House sparrows raid the nests of other birds, but not all the time.
OH MY GOD!!!! She got mad bc her chick died so she killed ALL the mother's real babies. Jesus
thank you for sharing this! i’ve never seen a cowbird take action on another birds nest, but they sure are evil birds of nature. i wonder why they can’t look after the chick themselves, it’s fascinating.
I think it’s very interesting as well! I was shocked to see how it played out. They’ve developed over time into brood parasites, meaning they lay their eggs in other bird nests and don’t raise their own young. Cowbirds do not build nests and I don’t think they would know how to raise a chick due to evolution. Their instincts tell them to lay in any nest they find. Obviously it’s been effective as they have survived all these years!
Why are you assigning human emotion with birds? The bird is acting on instinct, not an emotion
@@bmorecare4ul yes i realise that 😵💫😵💫 it just seems the cowbird has evolved to be quite evil in the sense it destroys the finches eggs after the finch mother accidentally over feeds it. i’m not talking as if it’s some sort of supervillain. it was just a saying 🤣
People should remove the parasite eggs themselves, and then once the parent bird shows up kill it. That would take care of "evolution". Make those evil birds extinct
@@bmorecare4ul Shut up.
Evil bird of nature
Nonsense
@@Angelaius Your opinion is?
no, it's just Nature. Evil is a biblical term.
@@KingCobra_45 nature's pretty evil, actually
@@hootax8980 remember Nature existed waaaaay before the wor evil and its definition. When it comes to nature its a matter of opinion. Like living backwards Evil 🔄Live . get it?
You raise my chick or you raise NONE!
I would love to be a bird so this b1tch can come to my nest and they can see what a true bad b1tch looks like.
Wow that is quite fascinating. One would say the cowbird holds the nest it chooses hostage rather than parasitize it. Can experts really explain such behavior on the cowbirds part? Surely it isn't acting out of vengeance right, but quite intriguing that it only harms the nesting birds eggs if it's own young is harmed/killed
It is likely done so that it forces the pair to make a new nest. New nests means more new opportunities for their species to continue the cycle. But I don't know, I'm just talking out of my ass here.
I think that this is done so that those birds that recognize and remove eggs / chicks of parasites would less successful in spreading their genome, and birds that do not recognize the parasite, gave offspring
@@foxfoxfox6799 I think you are correct, this finch pair abandoned this nest and went and built a new one far up in a pine tree that was much more sheltered. Usually finches sometimes reuse their nests.
“If I can’t keep my babies then you can’t.” -cowbird
Also, if they've adapted to purge the nest of a parasitic brood, even if it is by overfeeding, destroying the offspring ensures the adaptation does not propagate.
Cowbird is not that is a cow, but rather a coward
If this happened east of the Rockies, it is worth noting that the House Finch species is relatively new to the location. For millennia it had been only a western bird. House Finches were "introduced" to the eastern and central US as the result of a 1940 release of captured western House Finches in New York. From there they spread over the remainder of the country.
Yes most brood parasite birds do actually stay close to make sure their baby lives. Often the birds who are being parasitized will intentionally raise the baby of the other species just so their own can also survive. Otherwise this happens.
why on earth do you get so many dislikes, this is incredible content!
What was this recorded with? I have so many birds on my property I would love to watch them nest.
I have seen Bluejays actually stop by Finch Birds nest and kill the Cowbird chick and protect the Finch Nest like its own from the mother Cowbird. Is that even possible for other bird species intervene and protect other small bird nest?
It's possible that they targeted the cowbird chick because it was bigger and/or hatched before the other nestlings. Very interesting if the bluejays detect a common enemy, though.
They may simply have targeted the cowbird because it was the biggest, most delicious chick in the nest. There's another video of a snake targeting a cuckoo chick, since it was the only chick that hatched.
There is a cost to the chicks growing so big and fat.
The reason cowbirds do this is because they used to follow herds of Buffalo across the plains. They would uproot their food. Because of this they didn't have time to stop and make nests.
Clever birds
I don’t really care why they do it. This behavior has changed over time and become unnecessary for the cowbird. They could raise their own, because they aren’t following the roaming buffaloes. They are abhorrent creatures, just like the cuckoo. If I see one, it will not survive.
@@lagatha1037 same.
@@lagatha1037 yep
@@lagatha1037 it's called instincts idiot, these birds don't choose to behave this way. It's literally nature taking it's course. Evolution doesn't happen overnight. Of course they will still share these traits with the previous generations. It's a dog eat dog world not the sunshines and rainbows you were raised to believe it was. Please educate yourself instead of threatening animals who are living the only way they know how.
Lovely video, I enjoyed watching. Hello.
Birds don't feel emotions like humans do, so i don't think it did all thatı just to take revenge. It most likely destroyed that nest to encourage the pair to make a new one. When the female finch lays eggs again, it will also lay an egg.
Finally someone using their brain on youtube lol
It looked to me like she was trying to eliminate the house finches as a potential threat so she would not again lay her eggs in the nest of the "dangerous" birds.
Not necessarily. Some cuckoos will continue to destroy the future nests of the defiant host as well.
It's literally "take care of my kid, or you'll never have yours again". This is done when the host is smart enough to recognize the parasytes... And smart enough to understand the blackmail.
This is called "Mafia Behavior", and the evolution of both host and parasytes is called "evolutionary arms race" (yes really).
on the contrary emotions are all animals have by comparison. their intelligence is what is lacking.
I don't know which bird is worse the cowbird or the cuckoo smh
I say cowbird due to the mother actively making sure the other birds raise its spawn
@@SanMarcosBlanket I agree, but cuckoo chicks are the worse babies they are hard-core evil lol.
I think that if a bird does take care of a cuckoo's baby the cuckoo will actually protect it so cowbird is probably worse
@@xord6286 I don't like that the cuckoo baby kicks out the other babies from the nest of the bird they inhabit.
@@xord6286 Not worse at all. The cuckoo chick kills all the parent bird's offspring. When the cuckoo bird protects a nest with its young, it is protecting its own young, not the nest of the parent birds. They will see absolutely no benefit in it. If it is even true.
Makes no sense the cowbird don't want to raise its own but watches the nest to make sure their chick makes it, then if the chick dies the cowbird kills all the chick's! WTF, PETTY ASS BIRD!!!
So they're like a bird Karen... not wanting to actually do anything themselves, making demands and, if not met, they throw a fit and try to destroy everything.
what a horrible species to come out of evolution
Like people with opinion like yours? Cowbirds are clever. Saying that they are horrible is childish. Wonder if you say the same about lions who kill the cubs?
@@Angelaius
having another species raise your offspring while you watch from afar is parasitic
@@Angelaius yeah I'd say the same about lions that kill cubs. if you think being a parasite is clever, then you must live on social security I guess
@@Angelaius you’re a clown go join a circus where you belong.
@@Angelaius lions who kill cubs are completely different species and scenario. Clown.
And I thought cuckoos were bad.
Also where does the cowbird take the eggs? Do they just drop them somewhere?
It’s crazy how cowbirds use mafia tactics
What evolutionary pressure caused the Cowbird to be vindictive and pursue repercussions?
Wouldn't be upset if brood parasite birds went extinct.
I think this is the craziest thing I ever seen.
Cowbird evil
So what happened to the last egg -- did the cowbird take it or did it hatch?
the cowbird most likely returned and took it but if it didn’t then it probably would’ve died since there was no mother to lay on it
At the end of the video it said the parents abandoned the last egg.
Probably hatched and died of hunger because mom abandoned the nest. The End
Cowbirds are such Karens
They are technically welfare queens, they expect someone else to raise their chile
Do you guys think that this was done on purpose?? Or because the chick constantly asked for food led to it being overfed?
I don't believe the cowbird is supposed to be eating seeds as a chick. It's supposed to be eating insects. It choked and died because it didn't know how to eat the seed shells. Finches feed even their chicks seeds.
I hope so.....
*Finch birds are terrible parents.*
Tadinho dos bichinhos não conseguiram nem criar seus filhinhos, muito triste acontecer isso
Esse é o problema com a nossa sociedade. Fale oq quiser mas a unica vdd é que se o pai tivesse armado para defender sua familia a cowbird nao teria conseguido levar os ovos.
Finch feed your chicks with inmature seed. The cowbird chicks need insects. For this is hard to see fringillidae raising youngs cowbirds succesfully.
I always wondered how cowbirds can make there eggs to replicate the nesting eggs
Somehow they evolved to be able to mimick the eggs of the birds they're trying to fool even den to spots and color, and color of the birds beaks it's crazy
@@pryme42100 Cowbird eggs don't mimic the eggs of any birds they parasitize actually! You're thinking of cuckoos. Cowbirds are a lot more general than cuckoos, going for a "more is better" approach. They've been recorded targeting over 150 different bird species' nests! Some birds like jays and robins are adapting to recognize and eject the eggs, but they do risk being targeted by the parent like in this video.
what happened to the final egg?
It stayed there for a few days and then I examined it. Interestingly nothing had developed in it so it must have been a sterile egg.
@@EverydayCinematicBirds ok
@@EverydayCinematicBirds Wow wtf
Nature always has a purpose in its ways. What is the purpose of this type of revenge?
it results in that birds that are aggressive toward eggs that arent theirs cannot breed. while making sure that birds that dont attack the eggs reproduce. ensuring a lineage of docile host birds.
@@billyd7628 The poor finches didn't even mean to choke the cowbird, though.
1. To prevent hostile host from breeding any further, thus making a more docile host specie.
2. Since the nest is destroyed, the host parents will mate again and make a new nest, this time they'll take more care with the cowbird chick.
Wait, so what happens to that last egg? Can it still hatch? Sounds like a bad way to go out for that baby bird
it was abandoned, they said in the subs...
It was punctured by the cowbird when she flew away with the second to last egg.....
Why doesnt it show the cowbird removing that first egg (the first of the five)? We see one of the finch parents removing the dead cowbird chick, and the next thing we see is four eggs in the nest.
It also didn't show us the finches coming back to find just one egg left.
Birds trying to push the egg
*Egg falls down💀*
Hey, the baby crowbird did want to get fed……
nature is beautiful 😊
Your title of the video and subtitles are confusing.
The Finch family finally fecked off.
And one egg was left behind. Poor guy would’ve died from starvation either way
Damn it cowbird mom!
Why didn't the bird hatch that one last egg? Are they sad and dissapointed
The bird punctured it so it doesnt survive
So cowbirds stick around the nests they are mooching off of, and then kill the kids of the actual parents of the nest if their brood dies? That just seems like a waste of energy on the cowbirds part. At that point take care of your own kid.
And yet they have no time to build their own nests.....
parents should hv fought back
This looks a lot like Late Stage Capitalism
I wonder if the finch mom knew that baby wasn't hers and overfed and killed it on purpose. Idk which bird is worse, a cowbird or cuckoo.
I doubt it. Other birds usually they do not recognize that cuckoo is not theirs. They are not clever animals.
Where is the ransacking part?
Censored
@@silversurfergwNo, it's clickbait!
Unmitigated Gall.
Too much foods mommy
I want all cowbirds destroyed now.
I’m sorry but that’s beyond evil design.
โหดแท้... ทำลูกชั้นตายรึ(ทั้งๆที่ไม่เลี้ยงเอง) ล้างบางทั้งรังเลย...
Cowbirds should be deemed pests at this point. And be dealt with.
what an evil bird 😞
It's not evil. It has to survive as a species and this is how they adapted
@@nyancat8828Yeah, they clearly have to terrorize the nest once their own child dies due to their own negligence. How dare someone consider else that to be an evil action.
@@MellowMink I know, right? The audacity to assume the birds are evil because they destroy nests, rather than understand why they do it!
In all seriousness, though, they destroy the nest in hopes the parents lay again so that their offspring has another chance next time, or to encourage the host birds to ensure their baby survives during future attempts. It isn't evil- it's survival for their species... Which is the most important part for a species.
Death through over eating. That is a common event nowadays amongst humans 😂😂😂
Did it just revenge?
Isn't one parent supposed to look after the chicks while otherone is hunting
Not all birds do that.
That’s what happens if you mess up foster care
Cowbirds are worse than cuckoos when it comes to brood parasitism.
‘Cause at least the cuckoos don’t come back and destroy the nest if the egg is rejected.
They don't return because there isn't even a nest anymore after the cuckoo chick hatches.
The cuckoo chick pushes the other eggs out of the nest so they never hatch.
It is often the only chick that survives to adulthood.
Since cowbirds spare the eggs more often than not, they are not as dangerous as cuckoos.
Cowbird hens need to leave care instructions for the parasitic impostor!
*note on egg*: wanna see me make these eggs disappear?
The cowbird will destroy her nest
fun video!
😮
delivery food
🤣 Cowbirds are awful, shame on anyone not calling for their immediate indiscriminate poaching to the point of extinction.
Why? They exist for a reason... Just because you don't like how they evolved doesn't mean they don't deserve to live. We humans aren't any better
Evil cowbirds
Like the infamous cuckoo
comes from Africa to Europe.
This is the Jerry Springer side of the bird world...bitter baby momma drama
A whole definition of anchor babies 😆
I wanted to go to war for those finches 😡
Is there no one at the Scene ?
to do what? Interfere with nature. Are you planning on monitoring 100,000s of bird nests?
I get a surprising amount of comments saying I should have done something. I guess they expect me to watch the cameras 24/7 non stop.
i too like to mess up other families :)
It's a parasite bird so it's a good thing
Dirty Heffer😢🥺
5-0 Cowbird
LoL.
Jealous ex/ Stalker
I literally don’t understand why the people who are filming do not step in yes I understand let nature take its course but at this point you can see something is wrong step in and save that babies so that it can live into those wondering why the cowbirds lay their eggs in a nest and then the baby will die usually it’s a high success rate and the babies grow to be adults in and it’s a very successful thing it’s a wet because the cowbirds are constantly moving with the herds of bison or whatever big bovine animal they’re following around so they don’t have time to sit in a nest and raise chicks that’s why they get other birds to raise their checks for them
Because they weren't present, they set up a camera to watch a nest to see what wild birds to wild bird things and when they get the camera back later they check the footage and edit it. This is a channel about watching birds in the wild, not a 9/11 dispatch for animals, they probably didn't even have a live feed or a way to check the footage until after they've retrieved the camera after a week or three and reviewed it.
Because it aint any of their business! This between grown birds
the cameras are set up near the nest. there are no humans there.
This is an ass hole bird😂😂 i have one in my yard right now laying eggs in house finch nest,so i am thinking to put one big chicken egg to show him that the nest owner is a huge bird and will fuck him up😂😂
Nature is cruel haha
So you’re telling me whoever was filming this just stood there and both watch the baby bird suffocate and also watched another bird read the nest and steal eggs when they could’ve done something I agree with letting nature take its course but I also agree with if you can do something do it if you are there and able to stop it stop it if you’re able to chase off that female cowbird by scaring away do it if you were able to step in and get those seeds of that baby cowbirds mouth and save it do it if you are there to do something do it there is a reason that you are there to there and able to do something there is a reason that you were put there in that situation and able to do something so that you could do it when you say nature takes its course that’s when there is no human help around and no way that the animals could have helped that is what nature takes of course means but if you are standing you are standing there able to help and you don’t you are just watching an animal die and that is some thing that only a psychopath can do so ask yourself this the person who filmed this you watched an animal die right in front of you and watch another animal steal eggs from these birds nest are you a psychopath let me save you the trouble of asking yourself that question yes you are because you could’ve done something and you didn’t
It is a camera set up on a live bird nest, not a person standing there 24/7 with a camera. They just set up the camera to record and observe the nest. They then go back and review the footage the cam captured. They could've been away from home or busy with something when the drama unfolded, so just because there is a camera does not mean the person who set it up is always there all the time. Even if they step away for a few minutes something can happen.
Black people bird lol
Torturing and brutally slaughtering baby birds is so much fun
why do you let this happen why do you make these videos and do nothing about it do you like seeing animals die? you must since you post alot of it
What do you suggest they do? Eliminating the cowbird (while tempting) is unlawful. Going up to remove the parasite egg would result in the same outcome, and could cause the host parents to abandon the nest if it is deemed unsafe. Also, it's not like the uploader watches the nest 24/7. They simply set up the cam and let things play out as they would naturally.
Sounds just like BLM