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Or maybe the critically-endangered regent honeyeater, which has had a surge in votes after it nearly bowed out earlier in the competition.

He recalled: "They didn't sound anything like a regent honeyeater - they sounded like different species."

The regent honeyeater, which has lost about 90% of its habitat, now has such a small, sparsely distributed population that young males are simply unable to find other males and hear their songs.

The natural song of the regent honeyeater has essentially "disappeared" in 12% of the population, the research revealed.

The regent honeyeater, once abundant in south-eastern Australia, is now listed as critically endangered; just 300 individuals remain in the world.