Abstract
The numbers of common cranes (Grus grus) staging and wintering at Laguna de Gallocanta (Gallocanta), northeastern Spain, have increased throughout the period 1970-90. Consequently, we modelled the use of this area by cranes using Box-Jenkins Time Series Analysis to evaluate the influence of local food availability, duck hunting, and habitat and food conditions at other more traditional crane wintering areas in southwestern Spain on Gallocanta crane numbers. Food availability was not correlated with crane numbers at Gallocanta except during mid-winter
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