spatial distribution

PARTICULARITIES OF THE GREAT SPOTTED WOODPECKER (DENDROCOPOS MAJOR) (PICIDAE, PICIFORMES) WINTER SPATIAL DISTRIBUTION IN SARATOV CITY

Authors: Melnikov E. Y., Belyachenko A. V., Belyachenko A. A.

The spatial distribution of the Great Spotted Woodpecker in Saratov city was studied in the winter seasons of 2004-2012. The bird distribution was either aggregated or random. The multi-year wintering sites of the Great Spotted Woodpecker are associated with the gully network of the suburban woodland park, city parks, forest belts and old gardens. Dependence between the spatial distribution and pine harvest was found. The bird distribution was grouped in productive years and random in lean years, respectively, because of woodpeckers’ movements to the woodland park and built-up areas.

CALANDRA LARK (MELANOCORYPHA CALANDRA) AND CORN BUNTING (MILIARIA CALANDRA) (PASSERIFORMES, AVES) CURRENT DISTRIBUTION AND ABUNDANCE ASSESSMENT IN THE NORTHERN LOWER-VOLGA REGION AND ADJACENT TERRITORIES

Authors: Belyachenko A. V., Piskunov V. V., Belyachenko A. A.

Features of the Calandra Lark and Corn Bunting spatial distribution and abundance dynamics in the Northern Lower-Volga region were studied in the framework of the «Atlas of breeding birds of European Russia» project. Significant habitat boundary changes to the north (Calandra Lark) and north-east (Corn Bunting) were found over the last 10 - 15 years. Extension limits of the habitat boundaries of both species studied in the European Russia were forecast.