I have read that about fish and possibly some birds but I haven't heard it about chickens specifically. So which half is always waking up then? Sounds like both halves!But is it really truly that horrible? Birds sleep different from humans, they only sleep half the brain, the other half remains alert I have heard. So she is likely ok.
This is why you can't sneak up on a sleeping goose! No matter how much you want one for the freezer!