Most species of cormorants congregate in breeding colonies, but the Little Black Cormorant also regularly forms large flocks at other times. Foraging Little Black Cormorants may occur in flocks of hundreds or possibly thousands, which sometimes feed co-operatively. They have been recorded surrounding schools of fish in open water, and forming a line across marine inlets to catch fish washed out on ebbing tides. Flocks advance across the water’s surface, with birds flying ahead from the rear, alighting and diving in front of the feeding flock.
