Sleep patterns in the owl Strix aluco.
D000818:Animals; D001717:Birds / Q000502:physiology*; D002940:Circadian Rhythm; D003624:Darkness; D004569:Electroencephalography; D004576:Electromyography; D005133:Eye Movements; D006339:Heart Rate; D008027:Light; D009043:Motor Activity; D012119:Respiration; D012890:Sleep; D012895:Sleep, REM; D014851:Wakefulness