Wikipedia [1] implies it's to give them an incredibly large field of vision to spot prey, though the source it cites [2] seems less certain about that [1] http

Wikipedia [1] implies it's to give them an incredibly large field of vision to spot prey, though the source it cites [2] seems less certain about that [1] https://en.wikipedia.org/wiki/List_of_birds_by_flight_heightshttps://en.wikipedia.org/wiki/List_of_birds_by_flight_heights https://en.wikipedia.org/wiki/List_of_birds_by_flight_height... [2] https://web.archive.org/web/20131011012320/http://blogs.bu.edu/bioaerial2012/2012/09/26/the-ruppells-griffon-vulture-the-highest-recorded-flying-bird https://web.archive.org/web/20131011012320/http://blogs.bu.e...