The Pechora Pipit (Anthus gustavi, Passeriformes, Motacillidae) in Northeastern Asia

Аннотация

The data on the distribution and ecology of the Pechora pipit in northeastern Asia were updated on the basis of published data and the results of studies performed in the period from 1977 to 2016 in the basins of the Olenek, Lena, Yana, Indigirka, and Alazeya rivers. In contrast to the Ob and Yenisei watersheds, as well as to Chukotka and Kamchatka, in the basins of the above-mentioned rivers and in the mid-Kolyma basin, the Pechora pipit inhabits the northern taiga and shows less preference for the tundra zone. Compact breeding grounds are largely confined to large river valleys, and only in the Vilyui River basin can they be found in the watershed wetlands. The breeding range is predominately fragmented. The continuous distribution area of this species encompasses Kamchatka and, apparently, the Koryak Highlands and Southern Chukotka. Westwards, in the Yana and Kolyma basins between 66° N and 69° N, in the Lena valley between 68° N and 70° N, in the interfluve between the Vilyui and Olenek rivers between 63° N and 66° N, and in the Khatanga and Yenisei basins between 63° N and 72° N, a discontinuous distribution zone has formed. In the interfluve between the Vilyui and Olenek rivers and in the Alazeya River valley, the population density reaches its highest values observed in the species optimum in Kamchatka. The nesting sites of the Pechora pipit nests in grass associations, forages mostly in meadows and swamps, and feeds mainly on amphibiont invertebrates.