Differential reactions to anthropogenic disturbance by two ground-nesting shorebirds
作者： Shirley Van de Voorde , Minke Witteveen , Mark Brown
DOI: 10.2989/00306525.2015.1029558
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摘要: Many ground-nesting shorebirds experience a high level of anthropogenic disturbance, often to the detriment their breeding success. This study investigated responses Near-Threatened African Black Oystercatcher Haematopus moquini (ABO) and Least Concern Kelp Gull Larus dominicanus vetula (KG) disturbance during pre-breeding season at three locations differing in levels colony size. Birds were directly approached from over 100 m away markers dropped each behavioural reaction approach. Measuring back allowed quantitative measure effects disturbance. Stand response distances ABO location sensitive, which related level, showing that they stood up earlier highly disturbed location. Neither ambient conditions (wind speed temperature) nor nesting condition (egg age clutch size) played significant role responses. Interestingly, KG beh...
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