Migrating Buzzards

I saw these birds of prey soaring in thermals near the village in mid-September, sadly the pictures don't do justice to the majesty of the scene.

I've subsequently read they're most likely to be European Honey Buzzards (Pernis apivorus) migrating back to Africa. Populations concentrate as they approach the Mediterranean with at least 40 birds in this flock already. This group should eventually make it to Gibraltar for the short sea crossing into Africa.