http://ibc.lynxeds.com/species/crested-auklet-aethia-cristatella Huge flocks flying synchronously before going to roost at the colonies. It was 23:30h, but given the latitude it was still dusk. The Russian ornithologists working at the Talan Island Research Station said there were some 200,000 individuals flying, about half of the total population, since a member of each pair was already incubating.
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