The steppe eagle (<i>Aquila nipalensis</i> Hodgson, 1833) and the Eastern imperial eagle (<i>Aquila heliaca</i> Savigny, 1809) study on the territory of Central Siberia in the XX-XXI centuries

This paper deals with the study of the steppe eagle (Aquila nipalensisHodgson, 1833) and the Eastern imperial eagle (Aquila heliacaSavigny, 1809). The authors consider the research periods of these bird species: the beginning of the XX century to the 60th, 6080th, 8090th, and 90thof the XXI century and 2000. The authors use the materials of the researches and expeditions made in the XXXXI centuries on the territory of Central Siberia. They also analyze the borders change of the steppe eagle and the Eastern imperial eagle habitat. The authors carried out a detailed analysis of these types study they created an interactive map of the steppe eagle and the Eastern imperial eagle places of nesting and revealed an approximate border of their habitat. The study was carried out in four hollows: Uvs Lake Basin; Uregnursk Hollow; Tuva Depression; Minusinsk Hollow, located in Krasnoyarsk Krai, Tuva and Khakassia, the part of the territory of Southern and Central Altai. These eagles habitat border changes are a consequence of deep changes in activity of these types that undoubtedly will lead to a deeper study of this subject.