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

  • G. Cuendet

Abstract

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).

Keywords

Stomach Content Analysis Liquid Manure Earthworm Population Cereal Seed Earthworm Biomass 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Chapman and Hall Ltd 1983

Authors and Affiliations

  • G. Cuendet

There are no affiliations available

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