This gives birds their distinct—and misleading—"backward-facing knee" look. Like its non-flying close relatives, Microraptor had elongated bones lining the top and underside of its tail ...

Birds have long been nature’s masters of flight. Their ability to glide, dive, and twist through the air with ease has ...

Rooks have have black plumage with a purple-blue sheen — and they have untidy-looking feathers around their thighs (like ...