Yet another fact: when the bird receives a fracture, fibroblast cells invade the fracture and produce collagen fibers that connect the broken bone and ergo, span the fracture. From the nearby endosteum and periosteum, cartilage and osteogenic cells enter the fracture site. Spongy bone will then be formed by osteoblasts. The repair tissue is called fibrocartiliganous callus. The fibrocartilaginous callus will convert into bony hard callus, and eventually the bony hard callus is composed of woven bone and connects the fracture ends. So I was just illustrating the fibrocartiliganous callus heals before anything else does.
I think you did a good job with the video. I didn't see the whole thing, sorry. But, I thought I might make a comment on waterproofing in the bird's wings to anyone who might find it helpful. With waterproofing, preen gland secretions are not necessary. Also, interlocking of feather barbules creates a closely sealed obstacle that prevents movement of water into the interlocking barbules of the bird's feathers.
![Felix "Unfair" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/Oswujxm2Ag0/mqdefault.jpg)
I love your videos on avian anatomy. Thank you so much!
Best explanation
Very good explanation thanks
Yet another fact: when the bird receives a fracture, fibroblast cells invade the fracture and produce collagen fibers that connect the broken bone and ergo, span the fracture. From the nearby endosteum and periosteum, cartilage and osteogenic cells enter the fracture site. Spongy bone will then be formed by osteoblasts. The repair tissue is called fibrocartiliganous callus. The fibrocartilaginous callus will convert into bony hard callus, and eventually the bony hard callus is composed of woven bone and connects the fracture ends. So I was just illustrating the fibrocartiliganous callus heals before anything else does.
why do the pectoral and the pelvic girdle have so much surface area?
Thank you for this video, very useful
I think you did a good job with the video. I didn't see the whole thing, sorry. But, I thought I might make a comment on waterproofing in the bird's wings to anyone who might find it helpful. With waterproofing, preen gland secretions are not necessary. Also, interlocking of feather barbules creates a closely sealed obstacle that prevents movement of water into the interlocking barbules of the bird's feathers.
Can you make playlist for bird in your channel