WTF Fun Fact – North Island Brown Kiwi

The North Island brown kiwi is a flightless, nocturnal bird that lays a single egg which averages 15% of its body size (about 1 lb). It is the only bird known to consistently have both a left and right ovary as most birds have only a single ovary. WTF Fun Facts

Source: https://nationalzoo.si.edu/animals/north-island-brown-kiwi

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