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start:life_sciences:biology:pigeon_navigation

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Pigeon navigation

Homing pigeons can very reliably find their way back to their adopted roosting place - even when they have been physically removed hundreds of kilometres - (and often without any knowledge of the route).

It's known that they use a variety of methods to navigate - including detection of the Earth's magnetic field, olfactory clues, star patterns (at night), visual 'map' memories, ambient light polarisation and possibly low-frequency sound identification. No consensus exists amongst biologists, however, regarding which systems dominate, their interactions, and how the birds maintain the extreme accuracy that they have.

Wikipedia

Also see Marine Turtle Migration

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