140 MACROCHIRES: Goatsuckers, Swifts, and Hummingbirds 



BLACK-CHINNED HUMMINGBIRD 



(429. Archilochus alexandri) 3| in. 



Male: Wholly metallic green above; chin velvety black; 

 gorget metallic amethyst, square-cut against white chest; breast 

 dull dusky green; primaries and tail dusky purplish; tail slightly 

 forked. 



Female and young: Green above, dull whitish or grayish be- 

 low; throat often speckled with metallic amethyst; tail rounded, 

 white-tipped. Not distinguishable in the field from female Costa 

 Hummer. 



COSTA HUMMINGBIRD 



(430. Calypte costae) 3i in. 



Male: Back metallic green; crown and gorget amethyst, the 

 latter elongated on sides; chest and central portion of breast 

 white; sides greenish. 



Female and young: Indistinguishable in the field from the 

 Black-chinned. In the hand only the two outer tail-feathers are 

 white-tipped as compared with three in the other species. 



ANNA HUMMINGBIRD 



(431. Calypte anna) 4 in. 



Male: Crown and gorget metallic rose-red; sides of gorget 

 lengthened; back green; breast and belly green- washed; no 

 white below; tail and primaries purplish dusky. 



Female and young: Green above; gray below; throat usually 

 specked or patched with color of male gorget. Tail heavily 

 white-tipped, which, with patch on throat and relatively large size, 

 usually distinguishes from other species. 



