Site Tenacity in the Willow Ptarmigan (Lagopus lagopus L.) in the Northern Yamal Peninsula |
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Authors: | V. V. Tarasov |
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Affiliation: | (1) Institute of Plant and Animal Ecology, Ural Division, Russian Academy of Sciences, ul. Vosmogo Marta 202, Yekaterinburg, 620144, Russia |
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Abstract: | The return of willow ptarmigans to the sites in which they nested the previous year has been studied using color banding. No factors influencing the return index have been revealed, except for its dependence in males on the time when spring begins in a given year. In northernYamal, in contrast to the temperate zone, some surviving birds fail to return to their former nesting sites. Polymorphism of individuals with respect to territorial behavioral strategy is proposed for L. lagopus populations at the northern boundary of the species range.__________Translated from Ekologiya, No. 3, 2005, pp. 215–221.Original Russian Text Copyright © 2005 by Tarasov. |
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Keywords: | territorial behavioral strategy willow ptarmigan polymorphism northern Yamal |
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