Types of Birds

Bones of birds are

Kidneys of birds are

Which type of egg is found in the birds?

The bones of birds are long and hollow withh air cavities. These types of bones are called as:

All the members of a bird population have the same intermediate green colouration. What type of selection is likely to taking place?

Assertion.Birds are uricotelic. Reason. Birds lack urinary bladder.

Eggs of birds are