Endothermy can be a synapomorphy on the Mammalia, although it may have arisen inside of a (now extinct) synapsid ancestor; the fossil report isn't going to distinguish these choices. Convergent in birds. All twenty stork species have already been assessed from the IUCN and have a self-confident Red Record standing. https://riverks41h.blogerus.com/49138081/the-best-side-of-stork