Species composition and ecological groupings of birds of extrazonal transformed landscapes of Yenisei Siberia in the spring and summer period

The article presents the results of a pilot study conducted in May–June 2022 in the places of interpenetration of the Krasnoyarsk forest-steppe and subtaiga, where extrazonal transformed landscapes were formed. An important role in this was played by such factors as the location of the territory on the border of natural zones, the dismembered hilly-rocky terrain, active human economic activity, which also caused the high mosaic of biotopes. As a result, there is an overlap of ranges of typically forest and steppe bird species, as well as their nesting in close proximity to each other, which is explained by their ecological specialization. During this period, 105 species and subspecies of birds belonging to 13 groups were noted. All the diversity is distributed by ecological groups that correspond to the large biotopes identified in the study area: small-leaved birch and mixed forests; forest edges, felling and chopping; coniferous forests; high-stemmed and shrubby floodplain forests; residential landscapes; wetland complex; high-grass and low-grass open areas. Some phenological data, information on the biotopic placement, abundance and nesting of birds collected in the process of route hiking are presented.