Remsen, J.V. 1973 Allen's Hummingbird Selasphorus sasin July 3 373 Gravatt Dr. Berkeley, Alameda Co., Calif: Numerous ad. ♂♂ Oakland and ♀♀ or imm. at feeder. Some ad. ♂♂ losing gorget. July 4 373 Gravatt : 10-25 ♂♂, numerous probable ♀♀ . One display. July 5 373 Gravatt : same as yesterday , but no display July 7 373 Gravatt : 1♂ July 8 373 Gravatt : 1♂ July 17 373 Gravatt: ♀ Selasphorus were captured at feeder with insect nets. All were immatures by the bill corrugations. There were 8 ♂, 1 ♀ . Seven of the males were very probably Allen's by the narrow outer rectrices , to be sasin confirmed July 19 U.C.Botanical Garden, Strawberry Canyon, Alameda Co., Calif : 1 ad. ♂ - a late date for an ad. ♂ July 27 373 Gravatt: of 10 birds captured , at least 7 are almost certainly Allen's by virtue of very narrow outer tail feathers . Eight only 3 measured out to be of 10 birds caught were males , sasin July 31 U.C. Botanical Garden : 1 imm. ♂ displaying (no whoosh at the bottom of the dive. Aug. 3 373 Gravatt: at least one captured and tail feathers saved. But this was later found to be a Rufous