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Sonny is correct. Pigeons have magnetite-based receptors in their heads that allow them to sense both the direction of the earth’s magnetic field line and probably their intensity. Jack’s head, however, may be a bit emptier.
Sonny is correct. Pigeons have magnetite-based receptors in their heads that allow them to sense both the direction of the earth’s magnetic field line and probably their intensity. Jack’s head, however, may be a bit emptier.