How do yellowbirds divide their ages? How do yellowbirds divide their ages?

1, want to judge the age of yellowbird, mainly depends on its feathers and legs. Usually, old birds have dull feathers and thick paws. The bird is about 10- 12 cm long, with red and green upper body and dark yellow lower body.

2. Usually living in mountains, hills and plains, they will be in pairs in the breeding season, and they will live in groups at other times, especially when they migrate in spring and autumn, which often integrates large groups.