Appendix, 



with throat-patches or gorgets of shimmering 

 iridescent colors. The following specific 

 characters refer to the adult male bird. In all 

 but one of the six species commonly found in 

 California the back is golden green and the 

 belly whitish or grayish. 



64. Black-chinned Hummingbird ; Trochilus 

 alexandri Bourc. & Muls. 



The western representative of the eastern ruby- 

 throated hummer. No special crown ornament. 

 Gorget velvety black, bordered with iridescent 

 violet. 



65. Costa's Hummingbird; Calypte costcs 

 (Bourc). 



Head, like gorget, ornamented with steel blue or 

 violet iridescence. Small in size. Southern 

 California, San Diego and Colorado Desert. 



66. Anna's Hummingbird; Calypte a?ina (IjQss.'). 



Head, like gorget, ornamented with purplish red 

 iridescence. Large in size. An abundant 

 resident over nearly all the State. 



67. Rufous Hummingbird ; Selasphorus rufus 

 Gmel. 



Back largely cinnamon red, with but a trace of 

 greenish. Head plain greenish. Gorget 

 coppery red; sides cinnamon rufous; belly white. 

 Size small. Apparently resident in the south, 

 but breeds more commonly to the northward of 

 California. 



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