Homing pigeons use local natural odors to find their way

[ScienceDaily]

Homing pigeons use familiar smells to navigate their way across hundreds of kilometers of unfamiliar territory. Researchers have now confirmed that artificial odors cannot be used to stimulate or trigger a pigeon's navigation system. This means that the so-called olfactory activation hypothesis -- which has been proposed by some researchers -- should be disregarded, argues researchers.

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