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Smithsonian Magazine ·Future-gazing

How Do Pigeons Find Their Way Home? New Research Suggests the Birds' Remarkable Navigational Skills Come From Their Livers

Published 2026-06-02 21:21:04+00:00

Why would a pigeon need its liver to find the way home on a cloudy day?

0:00 / 6:01 · Narrator Sulafat

Context

A homing pigeon released twelve miles from its loft usually streaks back as if the devil is behind it. Writing on 2 June 2026, the Smithsonian follows a study suggesting this internal map isn't in the bird's brain or beak, but its liver. By tracking birds with GPS, researchers found that iron-rich immune cells act as a backup compass when clouds hide the sun. The finding offers a physical answer to a biological puzzle that has remained unsolved for over a hundred years.

Show notes

Homing pigeons may use iron-rich immune cells in their livers as a compass to detect the Earth’s magnetic field. Researchers tracked birds with these cells disabled and found they could not find their way home on cloudy days when the sun was hidden. The findings offer a biological explanation for how birds stay on course without visual cues, though some experts remain skeptical.

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