Because birds understand each other better because they are the same species. It's a bit like cats and dogs. They don't understand each other but cats do understand other cats.
birds are different than mammals
There are many mammals and birds that can survive after a storm. However there are fewer mammals and birds that can survive after a storm than what can.
Mammals are distantly related to birds. Oddly, if you look at an evolutionary tree, birds are actually more closely related to reptiles than they are to mammals.
No. Birds and mammals have radically different lung designs. Birds have a far more complex, but more efficient design than mammals do.
No. Hawks are birds, not mammals. Although birds are warm-blooded, they do not nurse their young, and most have lighter bone structures than mammals.
Of course not ...no birds are mammals !!!!!!!!!!!No, they are birds.
No birds are smarter than mammals.
No. Dinosaurs were not mammals. They were more closely related to birds and modern reptiles than they were to mammals.
well birds get eating more than mammals so they help care more.
Red Blood Cells are produced in bone marrow in birds as in mammals. The red blood cells are elliptical in birds and have a shorter life span than in mammals.
Some birds prey on other birds because they are adapted and evolved to do so. This is no different than some mammals (such as cats and foxes) eating smaller mammals (such as mice and rats).
No, they are birds.