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Bird embryos respond to adult warning calls inside their shells

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A pair of researchers with Universidad de Vigo has found that yellow-legged gull embryos respond to parental warning calls by vibrating inside their shells. In their paper published in the journal Nature Ecology and Evolution, Jose Noguera and Alberto Velando describe their study of the gulls in their lab and what they learned.
Bird embryos respond to adult warning calls inside their shells
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