In birds,reproductive organs of both sexes shrink to vestigal structures during the nonbreeding season.

Name: In birds,reproductive organs of both sexes shrink to vestigal structures during the nonbreeding season.
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Quizplus · Accepted Answer

This is true. In birds, reproductive organs such as the gonads shrink to vestigial structures during the non-breeding season in order to conserve energy and resources. Once breeding season begins, these organs will enlarge and become functional again.

In Birds,reproductive Organs of Both Sexes Shrink to Vestigal Structures