Juvenile Black-legged Kittiwakes Rissa tridactyla with deformed bills and clubfeet in the Barents Sea

Authors

  • Henrik Kylin Norwegian Institute for Air Research, Norway and Department of Environmental Assessment, Swedish University of Agricultural Sciences

DOI:

https://doi.org/10.34080/os.v15.22737

Keywords:

pollution, anthropological effects, disease, sickness

Abstract

Juvenile Black-legged Kittiwakes Rissa tridactyla with deformed bills and feet were observed in the Barents Sea in 1996, first while passing between Franz Josef Land and Novaya Zemlya on 21–24 July (at least 10 birds) and then off the West Coast of Svalbard 20–21 September (at least 2 birds). Deformities were manifest as prolonged upper or lower mandible, hooked or crocked upper mandible, crossed bill and clubfeet. This paper reports the circumstances of the observations and discusses possible causes. Among the possible causes are nutritional deficiencies, epizootic events, environmental pollutants (persistent organic pollutants, heavy metals or radioactivity), or combinations of these.

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Published

2005-07-01

How to Cite

Kylin, H. (2005). Juvenile Black-legged Kittiwakes Rissa tridactyla with deformed bills and clubfeet in the Barents Sea. Ornis Svecica, 15(3), 149–152. https://doi.org/10.34080/os.v15.22737

Issue

Section

Research Papers