(Springer) 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 Anna Gagliardo of the University of Pisa in Italy. Gagliardo and her colleagues have published their research in Springer's Journal of Comparative Physiology A.
from EurekAlert! - Social and Behavioral Science https://ift.tt/2LneQBn
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