Do cockatiels sleep with their eyes open?

They close their eyes (both of them), and often tuck their heads under a wing. Pulling up one foot is also typical of a sleeping 'tiel. Here is Whisky enjoying a nap amidst his toys! read more

If they know you are looking at them they will never sleep: )!!! I just happened to lift the blanket up from my cockatiels cage and her eyes were closed!!! Eh, they can be crazy. read more

No. They sleep on one foot like, typically with their head tucked under their wing. This conserves head; the biggest sources of heat loss is their beaks and feet. A healthy and relaxed cockatiel will sleep in this position. A comfortable cockatiel that still wants to keep a look-out will relax with one eye open. read more