Ostriches sleep like platypuses (and look wide awake when they do)

How does an ostrich sleep? Almost imperceptibly, it seems. Even though an ostrich might be sound asleep, it can look wide awake or, at most, a little drowsy. John Lesku from the Max Planck Institute of Ornithology discovered this by fitting six ostrichers with "Neurologgers", electrode-laden helmets that measures… » 8/28/11 1:30pm 8/28/11 1:30pm