This 4 October 2016 video, recorded in Georgia, is called Raptor migration in Batumi (in Danish; with English subtitles).
From the Batumi Raptor Count in Georgia:
Batumi – Saghalvasho
Sunday 3 September 2017
Counting period: 6:37 – 17:55
Count type: Storks and raptors
Weather: The day was sunny and the high clouds covered the mountains in the middle of the afternoon
Observers: Aki Aintila, Hélène Larnac, Simon Cavailles, Fabrice Cochard, Michiel de Koster, Jaime Escobar, Martha Mutiso, John Wright, Kaarel Vohandu, Thijs Schipper, Janosch Becker, Andrea Maier, Felix Timmermann, Diego Jansen, Anne Grohmann.
Black Stork 5
White Stork 56
Honey Buzzard 69670
Black Kite 3235
Marsh Harrier 150
Pallid Harrier 29
Montagu’s Harrier 347
Hen/Montagu’s/Pallid Harrier 99
Levant Sparrowhawk 50
Steppe Buzzard 1
Lesser Spotted Eagle 3
Greater Spotted Eagle 1
Booted Eagle 77
European Roller 39
Totals: 73764 individuals, 15 species, 11:18 hours
Bold = Remarkable observation (scarce or rare species or large number)
Comments: More birds coming! An incredible day for the harrier migration, also for the Pallid Harrier. Moreover, it was a big day for the Honey Buzzards who crossed sometimes very close of the station. Many broad streams glided over the Black Sea in the begining of the afternoon and later, all the streams crossing far in the mountains.
A bump in the road – our Georgian partner SABUKO has launched a Change.org petition to save the High Caucasus Mountains from road construction threatening the natural habitats of numerous endemic and endangered species. Sign the petition!