Tail feathers grow from the bird’s tail or structures that are part of the tail. So finding birds who actually have long ...

Fish, birds, most reptiles ... Yet, as you get closer to humans on the evolutionary tree, tails disappear. Gorillas don't have them. And neither do chimps or any other ape — including us ...

Often it is the common critters that go unnoticed or at least unappreciated. After all, when was the last time you noticed a house sparrow or pigeon? How about an eastern chipmunk or gray ...

Yet these behemoths’ most puzzling feature is a whip-like tail that can measure as long as the rest of the fish’s body. Why mantas and related rays have such long tails has long been a mystery.

Red-tailed hawks are known for their brick-colored tails, but there are more than a dozen subspecies of various colorations, and not all of them have this characteristic. These birds of prey are ...

The first pterosaurs had a sail-like tensioning system for flying with potentially cumbersome tail vanes, which they could have used for displays, a new study finds.

Humans do not have tails, but do we have “what it takes ... and when these genes are expressed. Even though birds lost teeth as physical structures between 60 and 80 million years ago ...

Near the end of the age of dinosaurs, a bird resembling today's loons and grebes dove for fish and other prey in the perilous ...