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Some birds smell to navigate, experiment shows

PARIS: At least one species of sea-faring birds uses its sense of smell to navigate over ocean waters, according to a novel experiment described in a study released on Tuesday. Temporarily deprived of the ability to smell, Scopoli's shearwaters had trouble finding their way home after embarking from the Spanish island of Menorca to forage, researchers reported in the journal Scientific Reports. The olfactory-challenged birds easily flew nearly 200 kilometres (125 miles) to the Catalan coast to gather food, but set off…