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brood parasitism
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Some Birds ‘Sign’ Eggs to Weed out Impostors
In the scrublands of southern Zambia, birds are practicing what’s known as “brood parasitism”—laying eggs in the nests of another bird species.
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In the scrublands of southern Zambia, birds are practicing what’s known as “brood parasitism”—laying eggs in the nests of another bird species.