It is developement
The Southern cassowary of Australia has a claw for its middle toe.
Yes. A bird can fly with a broken foot, but it will have difficulty landing and perching.
suck my toe
Homology.
excision of the finger or toe bone
Species may have similar appearances and structure but different genetic and evolutionary paths. For example, the wing of a fly and the wing of the bird.
If your canary has a bloody swollen toe you should take it to the veterinarian. Try cleaning it up with some peroxide but the bird should see a vet.
Feathers are a structure that are common to all species of bird. Most feathers are very similar in structure, although they vary depending on how and where the bird lives.
1. Body Build 2. Bone Structure 3. Finger Structure 4. Toe Structure
That is perfectly normal. There is a widespread mutation causing the second toe to extend farther than the big toe, but in the original structure of the human foot, the big toe extends the farthest, and this also gives the best stability to the foot.
The toe structure on a rotifer helps it anchor to surfaces, allowing the rotifer to move effectively and feed on algae and microorganisms in its environment. This structure also aids in maintaining the rotifer's position while feeding and avoids drifting away with water currents.
Examples of Homologous Structure: Rodent teeth Hooves in species of camels, goats, sheep and cattle Hands and feet in primates Bird feathers Shark morphology