Some species of bird have evolved a different sleep strategy compared to humans. Like us their eyes connect individually to opposite hemispheres within their brains. However, some birds can close one eye and rest the brain hemisphere associated with it, so that half it's brain is sleeping. When that side wakes, the other half of the brain sleeps. Some birds like the Arctic tern and various albatrosses can sleep like this while they are continuously flying extremely long distances.
Best wishes - Majikthise.
No they do not they are light sleepers and take short sleep breaks from time to time while ready to make a move at the slightest sign of danger