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Swan eats fish egg, poops it out, egg hatches


Still Waters

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Killifish eggs are known for their resilience: They’ve been found thriving in polluted Superfund sites and the short-lived ephemeral pools of Mozambique. To really put their survival skills to the test, researchers sent some unlucky eggs on a not-so-glamorous journey: through a swan’s digestive tract, emerging in the bird’s feces.

As Veronique Greenwood reports for The New York Times, at least one egg in the study survived the hours-long journey as an intact egg and then later hatched successfully, “apparently none the worse for wear."

The surprising survival story suggests that birds can act as carriers for fish eggs, transporting the casings far from their original locations,

https://www.smithsonianmag.com/smart-news/these-fish-eggs-can-travel-through-swans-digestive-system-and-emerge-intact-180972426/

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