A far-removed nest of Camponotus ants stirs. Winged males crowd out of the nest. I can see a few large-headed females as well, and worker ants of two sizes. I do not know if this nest was disturbed -- the ants may have emerged on their own (?) I watched them for over 16 minutes. Urgently, compulsively, the winged males would press out of the nest -- only to pull back. The workers would occasionally explore a little. I never saw a winged male or female leave the nest or take wing. It is interesting that widely separated Camponotus nests were stirring on the same day. This makes evolutionary sense: the ants want to breed with others of their species, but different nests, to mix up the genes. What tells them all to fly, the same day? Perhaps the first rainfall, a few days earlier, was a trigger. Near the Sun Research Center, on the trail to the dam.