True story. During ww2 Aussie diggers used to post a lookout for their superiors they would nickname the cockatoo while they were gambling or misbehaving. The c

True story. During ww2 Aussie diggers used to post a lookout for their superiors they would nickname the cockatoo while they were gambling or misbehaving. The cockatoo would make noise letting their fellow soldiers know of the incoming officer. This habit is named after the same habit the birds have for predators.