birds invertebrates

Are Birds Invertebrates? Are birds invertebrates? Sponges, corals, worms, insects, spiders and crabs are all sub-groups of the invertebrate group – they do not have a backbone. Fish, reptiles, birds, amphibians and mammals are different sub-groups of vertebrates – they all have internal skeletons and backbones. Are all birds vertebrates or invertebrates? Birds are warm-blooded