cyclical or circular. A. Directions: Using the Venn diagram below, compare and contrast the features of BIRDS and BATS after reading the paragraph. Write on the inner portion of the circle their similarities, and on the outer portion, their differences. Features about Bats and Birds Bats came from the Chiroptera and Aves family. They are webbed structured flying animals while birds are feathered winged animals. Bats are mammals, so they don't lay egg compared to birds that are known as egg-laying animals. When flying, bats don't flap their forelimbs completely compared to birds. Bats and birds both have streamlined bodies. Thi similarity helps provide them the ability to maintain speed while in flight and feeding. BIRDS BATS