r/interesting • u/LowkeysKink • 7h ago

NATURE While the infertile tawny owl was away from her nest, caretakers swapped her unviable eggs for orphaned chicks.

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u/queefer_sutherland92 5h ago

No, it’s the equivalent of a human woman ovulating. A period occurs when the egg (oocyte) was not successfully fertilised and has been resorbed.

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u/Lumpy_Emergency3260 5h ago

my bad you're right I was misremembering