......Before understanding the processes of Evolution of Birds we need to go over some basic questions, which will be covered within the next three parts. To start; What is a Bird? In a simple straight forward answer, we can say that birds are flying animals that have feathers. The problem with this statement is that not all birds can fly, and to make things more complicated, birds do not all "fly" the same way. So, what is a bird? Well, in scientific terms, birds are part of a group called AVES and apart of an even bigger group AMNIOTES, this group includes all mammals, birds and reptiles.