by Pajarita » Thu Oct 02, 2014 10:37 am
I think they kind of like half wake up, turn around and go back to sleep, just like people do. But birds also have the ability to sleep with half a brain (something we can't do -we are predators, they are prey) so there is always a part of their brain that is active and paying attention to what is going on around them because, after all, there are predators that hunt at night. They've studied flocks and found out that the more able-bodied of them take turns sleeping on the perimeter of the group and that these individuals sleep with only half their brain so they can instantly wake up and call the alarm if there is danger to the flock - they do the same thing when they are feeding on the ground, the ones in the inside just lower their heads and eat and eat while the ones on the outside peck at the ground, lift their head and look around, peck at the ground, lift their heads and look around and so on until the flock takes flight. Amazing and fascinating animals birds are, aren't they?