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Regent honeyeater. CREDIT: David Stowe   About 12% of male regent honeyeaters wind up producing mangled versions of songs typically sung by noisy friarbirds and black-faced cuckooshrikes Male songbirds usually learn their tunes from adult mentors. But when aspiring crooners lack proper role models, they hit all the wrong notes and have less success attracting mates. For five years, ecologist Ross Crates has tracked the singing ability and breeding success of critically endangered regent honeyeaters. These distinctive black and yellow birds were once common across Australia, but habitat loss since the 1950s has shrunk their population to only about 300 or 400 wild birds today.

Carl safinaScott ramsayPeter marraAustralian national universityStony brook universityGeorgetown universityProceedings of the royal societyb weWilfrid laurier university in ontarioGross cratesAustralian nationalRoyal societyJim bobWilfrid laurier universityRegent honeyeaterLove songSpecies decline