Nearly all living birds belong to the superorder of Neognathae or "new jaws". With their keels, unlike the ratites, they are known as carinatae. The passerines alone account for well over 5000 species.
Read more about this topic: List Of Birds
Nearly all living birds belong to the superorder of Neognathae or "new jaws". With their keels, unlike the ratites, they are known as carinatae. The passerines alone account for well over 5000 species.
Read more about this topic: List Of Birds