NPR:
“In 1969, Neville Fenton, an Australian park ranger, recorded a lyrebird singing a song that sounded very much like a flute, a flute being played by a human.

"Phrases from those flute songs apparently became part of the local lyrebird songbook. A scholar named Norman Robinson figured out that the songs wild lyrebirds were singing in 1969 were modified versions of two popular tunes from the 1930s, "The Keel Row" and "Mosquito's Dance."

https://www.npr.org/sections/krulwich/2011/04/26/135694052/natures-living-tape-recorders-may-be-telling-us-secrets