Displaying articles by tag: General Characters of Aves

BS Media in Zoology

Saturday, 01 July 2017 11:57

GENERAL CHARACTERS OF BIRDS (AVES)

AN INTRODUCTION TO AVES (BIRDS)   Birds (AVES) are highly evolved vertebrates. In the Jurassic period of Mesozoic era the Birds first appeared. They evolved from Ornithischian dinosaurs of Reptilian group. In the cretaceous period the birds became modernized.   Birds are bipedal vertebrates. Their fore limbs are modified into…