Phylum Aves Birds Evolution of birds Adapted for flight – very successful adaptation Evolved from two-legged dinosaurs called theropods. Often called feathered dinosaurs Characteristics Like reptiles, scales and claws on feet Feathers Wings Endotherms Feet Scales Claws on toes
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Birds cool themselves by:
Distinctive characteristics can be used to identify species (color, size, shape)
A martin’s nest of twigs and leaves