Question

Which character is not shared by birds and mammals?

Answer 1

Answer:

hey mate ,,

Class Aves (Birds) -

Characterised by the presence of feathers and most of them can fly. They posses beak and forelimbs are modified into wings.

- wherein

Eg. Corvus, columba, Psittacula, Struthio, Pavo.

AND

Class Mammalia -

Unique characteristic is presence of mammary glands. Two pairs of limbs and external ears or pinnae present.

or

Birds are oviparous while mammals are oviparous (prototherians) and viviparous (metatherians and eutherians).

if helps this mark as brainliest...

Answer 2

Answer:

Explanation:birds do not have mammary gland s but mammals have!!

Hope it helps u my dear!!