Vertebrates: both birds and mammals are vertebrates, which means that they have backbones. Endothermic (warm-blooded): both birds and mammals are endothermic (warm-blooded). This means that they are able to regulate their own body temperatures. read more
They are birds. mammals are covered with hair and give live birth and feed them from mammary glands (cows, people, cats, dogs, horses, etc). birds lay eggs and feed their young with bugs and worms. read more
Some people confuse the plumage of birds with hair due to which sometimes they call few birds as mammals. But it is not true, plumage cannot become fleece or hair and neither can birds feed their babies with milk. read more
For the best answers, search on this site https://shorturl.im/awycW Birds are warm blooded, but that alone is not enough to make them mammals. They would need to have hair or fur and nurse their young. read more
Birds are warm blooded, but that alone is not enough to make them mammals. They would need to have hair or fur and nurse their young. You are correct that mammals are named that because they nurse their young from mammary glands. read more
Birds Vs Mammals Similarities Between Birds and Mammals. Although birds and mammals are very different types of animal, they do have certain characteristics in common: Vertebrates: both birds and mammals are vertebrates, which means that they have backbones. Endothermic (warm-blooded): both birds and mammals are endothermic (warm-blooded). read more