Paul DeBenedictis 1961 Calypso anna. 27-July Botanical Gardens, Strawberry Canyon, Berkeley, Calif. a male of this species spent some time defending a territory 20x30 paces in size, roughly square. He defended it against all hummers, ♂+♀, of both his own species and Allen's hummer, Selasphorus sasin, map of the area below. Most invading birds are young ♂ or ♀ Allen's. Adjacent ♂ located, ♂ ♀ Allen + ♀ anna. Conflict is between ♂ Allen Birds not objected to new Spotted townees, Roblins, Galif. thrasher, steller lays, & bunnets. ♀ Anna located nearby makes occasional sorties into the ♂'s range to get nectar from the thistles, but ♂ always chases her out. center of territory is probably oaks, but bird spends much time on thistles. other male's territory is separate by about 15 yards. It is centered on a large bush. 1 Aug. same - both ♂ Anna are in the same territories - as on the 27th. The thistles have almost died now. It was much warmer and birds were little in evidence. There may be another ♀ Anna here. Both the ♀ anna and the ♂ Allen Hummers appear to be gone.