An ornithopter is a device, whereas a bird is an animal
bird bones are lighter
No features suggest it is a bird. It is a mammal. The bill of a platypus serves a quite different function to that of any bird, as bird do not have electroreceptors in their bills. Platypuses do lay eggs, but even the eggs are quite different to those of a bird.
common winter bird
common winter bird
common winter bird
the bird have wings while the rocket have none
Yes there are modified bird feeders for many birds, for example a hummingbird feeder has small holes for their different beaks. There is no bird feeder for all birds.
The steppe eagle & the Ibis
How the bird,and insects are different? How the bird,and insects are different? THE BIRD has TWO FEET THE INSECTS have more FEET
No, bird fleas cannot get into cats. There are different kinds of fleas.
Common winter bird.
No. They are in completely different orders. These are very far appart in genes.