Dangerous indeed, but it truely depends what the owner means when they say they *sleep* with their bird. I let my birds in my covers sometimes in bed, but ONLY when I'm awake........just to play/cuddle with them. I *never* fall asleep with them in bed....I'm very careful about that. Birds are little and delicate and can easily get crushed by their sleeping human companion on accident, so you're right..........its not recommended to sleep with a bird at all.

BTW, welcome to Pet Talk!