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Revelation: Only 3% of Birds Have Penises

1/15/2025

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Summary

Story summary

In a surprising revelation for 2025, only 3% of bird species have penises, with most relying on a cloaca for reproduction. Ducks stand out with their corkscrew-shaped appendages, designed to thwart unwanted mating. In contrast, chickens lose their penis during development, a fascinating outcome tied to unique genetic traits.

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Story summary

In a surprising revelation for 2025, only 3% of bird species have penises, with most relying on a cloaca for reproduction. Ducks stand out with their corkscrew-shaped appendages, designed to thwart unwanted mating. In contrast, chickens lose their penis during development, a fascinating outcome tied to unique genetic traits.