By Aki Aintila
Imagine thousands of raptors literally swarming, continuously gliding, in one gigantic stream. The stream reaches from just overhead to many kilometers to the north, almost as far as your naked eye can see. When you raise your optics to your eyes, you see even more birds joining in.
Other birders surround you, all gazing at the masses of birds in pure awe. The soundscape is dominated by the almost-neurotic clicks of pocket clickers as volunteer counters keep track of the numbers as the birds pass by.more