At my younger age there was gossip in our group about ghosts' voices that were heard at nights demanding delicacies from the passersby. Now, I wonder whether it could have been the mimicked sounds of a bird! Here, in South India, mynahs and black drongos mimic and then forget the sounds instantly. But it is said that there is a bird that records, remembers and repeats sounds that it heard 30 years back!
