Seagull flock feeding on swarming ants (26/07/10)
This is the nest in the bottom right hand corner of the top photo
Workers around a nest with winged ants emerging (26/07/10)
ReferenceJames Baird and Andrew J. Meyerriecks (1965). Birds Feeding on an Ant Mating Swarm. The Wilson Bulletin, 77 (1), 89-91.
Gilbert S. Grant (1992) Opportunistic Foraging on Swarming Ants by Gulls, Shorebirds, and Grackles. The Chat, 56, 80-82.