Birds are a group of warm-blooded vertebrates constituting the class Aves characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, ...
People also ask
What is the most common birds?
What is the name of 10 birds?
What is the description of a bird?
How many bird species are in the US?
Explore more than 800 North American bird species, learn about their lives and habitats, and how climate change is impacting their ability to survive.