Navigation under threat: Birds use sun, stars, magnetic fields, and UV vision to migrate, but these cues are increasingly disrupted by geomagnetic shifts, weather, and human impacts. Climate-driven ...
Scientists have uncovered a surprising navigation system in pigeons: iron-filled immune cells in the liver that may act like tiny magnetic sensors. Birds deprived of these cells struggled to find ...
Homing pigeons don’t rely on gut instinct to return to the roost. But a nearby organ — the liver — might point the way. White blood cells in the birds’ livers accumulate iron and act as an internal ...
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