What does the sparrow look at age

If you want to judge the age of the sparrow, you can look at the situation of feathers or check its claws.If the feathers are messy and the skin on the paw is thick, it means that it is older.Although this kind of bird is very common, it is raised very few and not as pet birds. Although it is not an important protective animal, personal cultivation is still risky. It is best to release it as soon as possible.