Endothermy is really a synapomorphy from the Mammalia, even though it could have arisen in a (now extinct) synapsid ancestor; the fossil report doesn't distinguish these choices. Convergent in birds. Grownup white storks have lengthy pointed purple beaks, prolonged pink legs with partly webbed toes on the end and an https://gregoryuw61e.imblogs.net/76333167/the-smart-trick-of-stork-that-no-one-is-discussing