Assertion: pigeon | /r/CapableOf | navigate using earth's magnetic field
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text: William Tinsley Keeton (1933–1980) studied homing pigeons, showing that they were able to navigate using the earth's magnetic field, the sun, as well as both olfactory and visual cues.
text: Pigeons have trace amounts of haematite within their sensory organs found within their beaks that help them navigate using the earth’s magnetic fields.