To woo females, male lyrebirds sing songs. The problem is competition: If another nearby lyrebird has a more complicated song, the female will fly there first. So to even their chances, lyrebirds essentially "pirate" the songs around them, reproducing them perfectly.
When they live close to a human environment, this piracy can have unintended effects. Because the lyrebird doesn't know what is a song and what isn't, they'll mimic whatever they hear. In this footage, we hear a lyrebird that has been exposed to a human construction site—and it is astonishing. You'll hear what sounds like a Sawzall cutting steel studs, the unmistakable staccato whine of a power driver, boards being dropped, a hammer tapping wood studs into place, and even a construction worker's voice and laugh!