Are birds reptiles or mammals?

Birds are neither mammals (they don't have mammary glands) nor reptiles (they are not cold blooded), but instead belong in a grouping all their own. The bird group is one of six basic animal groups, with the others being amphibians, fish, invertebrates, mammals and reptiles. read more

Yes, birds are reptiles, but let me explain a bit. Biologists use two types of classification systems, the Linnaean and the phylogenetic. The Linnaean system was developed by Carolus Linnaeus in the 1730's. read more

Reptiles have dry skin, mostly composed by scales or bone plates. read more