Predation on earthworms by the Black-headed Gull (Larus ridibundus L.)

  • G. Cuendet


This study, carried out in Switzerland, aimed to provide information or numerous farmers who, fearing that predation by Black-headed Gulls might significantly decrease earthworm populations in their cultivated fields, had sought permission to shoot the gulls. Earlier studies on the topic wereonly qualitative and were done during a period when earthwormsseemed less important in the gulls diet (e.g. jirsik, 1945; Creutz, 1963; Schlegel, 1977).


Stomach Content Analysis Liquid Manure Earthworm Population Cereal Seed Earthworm Biomass 
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© Chapman and Hall Ltd 1983

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  • G. Cuendet

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