Owls can turn their heads much farther than most other birds can.

The longer version

An owl's eyes sit in sockets shaped like tubes, so the bird cannot roll them sideways to look around. Turning the whole head is the workaround. Owl necks carry more vertebrae than a mammal's, and the arteries running up the neck have wide, slack sections plus extra vessels that keep blood flowing when the head rotates far around.

The tube-shaped eye explains the limit. A bigger eye gathers more light but leaves little room for the muscles that would move it. Most birds can swivel the head, but owls take it much further. People often overstate the motion as a full circle; the neck simply twists within a wide, protected range.

Where this entry sits

Here you will find feathered trivia about flight, migration, nests, eggs, and the songs birds sing. Expect short surprising facts on penguins, owls, hummingbirds, and other familiar birds from gardens, forests, wetlands, and distant coastlines. The full list sits on the Birds page, where every entry is listed in order.