Can all birds turn their heads all the way round?

No, not all birds can turn their heads all the way around. While some species, like owls, have a remarkable ability to rotate their heads significantly due to unique neck structures, they can only turn their heads about 270 degrees, not a full 360 degrees. Most birds have more limited neck flexibility, allowing for a range of motion that helps them spot predators and prey without needing to turn their entire bodies.