This video from Georgia says about itself:
Honey Buzzard migration, Batumi 2013-09-03
A short film of migrating Honey Buzzards in Batumi. The bottleneck of Batumi is probably one of the best places to be if you wanna see a lot of migrating raptors. In early september, the peak time of honey buzzards occurs and thousands of Honey Buzzards migrate.
However, there are always other days, better than good days.
Champions of the Flyway 2014 race helps mobilise falconers to save migratory raptors in Georgia: here.