Abstract
It has been shown that the white wagtail at the northern limit of its range forms a population or a group of populations with a high degree of independence from conditions of illumination (photoperiod) in the Subarctic and southern Arctic. The boundary between the tundra and boreal populations in Yamal lies in the forest-tundra: wagtails of the tundra population nest north of the 68th parallel, and wagtails of the boreal population nest south of the 66th parallel. The zone between these latitudes is inhabited by representatives of both populations, and active hybridization apparently takes place there.
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Original Russian Text © V.N. Ryzhanovskii, 2006, published in Ekologiya, 2006, No. 2, pp. 134–139.
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Ryzhanovskii, V.N. Evidence for the existence of a high-altitude white wagtail (Motacilla alba) population in the Yamal peninsula and the boundaries of its distribution. Russ J Ecol 37, 120–125 (2006). https://doi.org/10.1134/S1067413606020093
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DOI: https://doi.org/10.1134/S1067413606020093