Birds can fly to islands or be blown there by storms while they are flying. Mammals, which, with the exception of bats, cannot fly, would have to arrive by swimming or drifting during which time they are likely to die before reaching the islands.
fly over water
fly to and from the island while mammals need would need a land route or be taken by boat.
Both birds and mammals care for their young.
They are all animals. That is about it.
yes
Of course not ...no birds are mammals !!!!!!!!!!!No, they are birds.
No. Both mammals and birds "inherited jaws" from a common reptilian ancestor which ultimately originated in an early fish.
Birds have a 4-chambered heart, a characteristic in common with mammals.
reptiles and amphibians have the most in common
No, they are birds.
No. Birds are not mammals.
No. They are birds. Birds and mammals are separate classes of animal.
No. They are birds. Birds and mammals are separate classes of animal.