Birds are a group of warm-blooded vertebrates constituting the class Aves characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, ...
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Feathers are not the only thing that defines an animal as a bird, they also have wings, lay eggs, build nests and have specialized beaks and feet. FEATHERS!
Explore more than 800 North American bird species, learn about their lives and habitats, and how climate change is impacting their ability to survive.
Birds have a sensitive skin that allows them to feel and sense pressure, heat, and cold. The feathers of a bird grow from the inner layer of skin (the dermis).
As predators and scavengers, birds of prey are vital to balanced and healthy ecosystems. We have national and internatio...