To tell the sex of a Galápagos penguin, measure its beak, researchers say
Science2018-06-28
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For a Galápagos penguin, beak size is nearly a perfect indicator of whether a bird is male or female, scientists have discovered. Armed with this knowledge, researchers could determine the sex of a bird quickly and accurately in the wild without taking a blood sample -- speeding up field studies of this unusual and endangered seabird.
Source: ScienceDaily
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