Why did the researchers swap the eggs of the fairy-wrens
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The researchers also determined that each nest had a different "password". To determine if the trait was genetic or learned, the team then swapped eggs between 22 nests. In swapped nests the chicks cry was more similar to its foster mother than biological mother, Kleindorfer says, indicating the trait is learned.
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To determine if the trait was genetic or learned, the team then swapped eggs between 22 nests. In swapped nests the chicks cry was more similar to its foster mother than biological mother, Kleindorfer says, indicating the trait is learned
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MARK as BRAINLIST
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