Use The Birds - Ostriches to Guinea Fowl - Quiz to test your knowledge of the more than 8,700 species of birds alive today introducing the class Aves, the first group to be termed "warm-blooded." This quiz will also test your knowledge of how these birds are grouped into 27 different orders and more than 155 families, ostriches, penguins, albatrosses, pelicans, flamingos, swans, condors, hawks, eagles, and more.
