Key to the first bird’s flight was likely a set of never-before-seen feathers, called tertials, found on the upper arm of the ...

The presence of two types of skin on the fossil implies that dinosaurs may have retained reptile skin as protection while experimenting with feathers in certain areas in the early days of feather ...

But there is one natural wonder that just about all of us can see, simply by stepping outside: dinosaurs ... threadlike feathers alive today: baby birds. All the feathers on a developing chick ...