Autumn Migration of Eagles in the South Baikal Migratory Pass: Dynamics for 30 Years

Abstract

Regular observation on autumn migration of raptors in the South Baikal migratory pass (SBMP) began in the late 1980s, and in the late 1990s, full-season counts began (25 August – 10–20 October). During autumn, 5722–14639 individuals of soaring raptors have been recorded. They prefer not to cross Lake Baikal over the water, but instead flying in thermals along the western bank of Baikal; significant numbers of eagles from the southern part of Irkutsk Region pass through this “bottleneck” (Alexeyenko, Fefelov, 2009). Our stationary censuses cover more than 3/4 of the width of this bottleneck.

Keywords

• хищные птицы
• миграция