Usually he sleeps 10 to 11 hours at night when it gets dark, he only sleep when the room is totally dark. During daylight or when the lights are turn ON, he won’t sleep.
Most of parrots need at least 10 hours of sleep a day. However, African Grey Parrots require at least 12 to 14 hours of sleep a day. Often, it is the incomplete and insufficient amount of sleep that leads to grumpiness and behavioral issues such as plucking their own feathers, in grey parrots.