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The common buzzard (Buteo buteo) is a medium-to-large bird of prey which has a large range. A member of the genus Buteo, it is a member of the family Accipitridae. The species lives in most of Europe and extends its breeding range across much of the Palearctic as far as northwestern China (Tian Shan), far western Siberia and northwestern Mongolia.[1][2] Over much of its range, it is a year-round resident. However, buzzards from the colder parts of the Northern Hemisphere as well as those that breed in the eastern part of their range typically migrate south for the northern winter, many journeying as far as South Africa.

The steppe buzzard breeds as far west as eastern Sweden, in the southern two-thirds of Finland, eastern Estonia, much of Belarus and the Ukraine, eastward to the northern Caucacus, northern Kazakhstan, Kyrgyzstan, much of Russia to Altai and south-central Siberia, Tien Shan in China and western Mongolia. 

Buteo buteo vulpinus is a long-distance migrant. It winters largely in much of eastern and southern Africa. Less frequently and often very discontinuously, steppe buzzards winter in the southern peninsulas of Europe, Arabia and southwestern India in addition to some parts of southeastern Kazakhstan, Uzbekistan and Kyrgyzstan. In the open country favoured on the wintering grounds, steppe buzzards are often seen perched on roadside telephone poles. It at one time was considered a separate species due to differences in size, form, colouring and behaviour (especially in regards to migratory behaviour) but is genetically indistinct from nominate buzzards. Furthermore, the steppe buzzard engages in extensive interbreeding with the nominate race, mudding typical characteristics of both races.

Steppe buzzards are usually distinctly smaller, with relatively longer wings and tail for their size, and thus often appear swifter and more agile in flight than nominate buzzards, whose wing beats can look slower and clumsier.

Source : Wikipedia