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Unusual hunting and feeding behaviour of polar bears on Spitsbergen

Published online by Cambridge University Press:  28 February 2013

Lech Stempniewicz ,
Dorota Kidawa ,
Mateusz Barcikowski  and
Lech Iliszko
Lech Stempniewicz
Affiliation:
University of Gdansk, Department of Vertebrate Ecology and Zoology, Wita Stwosza 59, 80–308 Gdansk, Poland (dokdki@univ.gda.pl)
Dorota Kidawa
Affiliation:
University of Gdansk, Department of Vertebrate Ecology and Zoology, Wita Stwosza 59, 80–308 Gdansk, Poland (dokdki@univ.gda.pl)
Mateusz Barcikowski
Affiliation:
University of Gdansk, Department of Vertebrate Ecology and Zoology, Wita Stwosza 59, 80–308 Gdansk, Poland (dokdki@univ.gda.pl)
Lech Iliszko
Affiliation:
University of Gdansk, Department of Vertebrate Ecology and Zoology, Wita Stwosza 59, 80–308 Gdansk, Poland (dokdki@univ.gda.pl)
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Abstract

Prolonged chasing of an adult reindeer (Rangifer tarandus) by a polar bear (Ursus maritimus) was observed both on land and in the sea, in Magdalenefjorden, northwest Spitsbergen. Polar bears were also observed catching black guillemot (Cepphus grylle) in the sea in northwest Spitsbergen and feeding on chicks in the arctic tern (Sterna paradisea) colony in Hornsund, southwest Spitsbergen. While feeding on seabird species is unsurprising, the prolonged chasing of adult reindeer is unusual for polar bear hunting behaviour. The few documented cases of polar bear hunting reindeer consist of either surprising and killing resting/sleeping prey or stalking and a short rapid chase of the reindeer. Our observations describe new feeding habits of polar bears that may be in response to decreasing seal availability due to shrinking sea-ice cover in the Arctic.

Type
Notes
Information
Polar Record , Volume 50 , Issue 2 , April 2014 , pp. 216 - 219
Copyright
Copyright © Cambridge University Press 2013 

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