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This undated handout photo received from Australian National University on March 17, 2021 shows a rare Australian songbird, a female regent honeyeater, at the Capertee National Park in New South Wales. A rapid decline in Australia's rare regent honeyeater is killing off the bird's “song culture”, with its young struggling to learn mating calls as adults disappear, according to new research on March 17, 2021. (Photo by David Stowe/Australian National University/AFP Photo)
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