Abstract
Abstract Common terns departed from their breeding colony together and in the same directions. However the low success foragers did not follow the more efficient feeders. This finding contrasts with the hypothesis that colonies may act as information centres in the common tern. We suggest that leaving colonies contemporaneously and in the same direction as a flock may be the results of different ecological pressures such as the predation; moreover clumped departures and arrivals may be related.
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