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Lyrebirds, a common bird in rainforest areas of Australia, have an incredible repertoire of sounds that they are able to mimic from their environment, including over 20 other bird calls as well as sophisticated mechanical sounds. They have been known to replicate the sounds of chainsaws and pneumatic drills. The male lyrebird sings a medley of mimicry to impress females -and the more detailed and varied his repertoire is, the more interesting it seems to potential mates. Like females of other bird species, female lyrebirds do not take place in the imitating, but simply judge the competing males' symphonies. Once learned, it seems a lyrebird rarely forgets a call, and the sounds are passed down through the generations . There are some lyrebirds in Victoria, Australia, that still recreate the sounds of axes, saws and old-fashioned cameras which have not been used in the area for years.