Appendix. 



50. Red-naped Sapsucker; Sphyrapicus varius 

 nuchalts Baird. 



An intermediate form between the yellow-bellied 

 sapsucker of the eastern states and the red- 

 breasted sapsucker of the Pacific Coast. Red 

 of the throat spreading to sides of the head in 

 adult male, and female with throat more red 

 than in the eastern bird, but less red than in 

 the following species, which it otherwise re- 

 sembles. Tn California only on the eastern 

 slope of the Sierra Nevada Mountains. 



51. Red-breasted Sapsucker; Sphyrapicus ruber 

 (Gmel.). 



Length eight and a half inches. Entire head and 

 breast carmine red in adult male. Back streaked 

 or spotted black and whitish, the white often 

 tinged with yellow. Belly pale yellowish; 

 wings white with a broad white patch on the 

 upper wing and white spots on the flight- 

 feathers. Immature birds show every gradation 

 from a brownish gray bird, but some yellow 

 tinge nearly always apparent. Breeds in the 

 mountains and south in winter through the 

 valleys. 



52. Williamson's Sapsucker; Sphyrapicus thyroi- 

 deus (Cass.). 



An exceedingly showy species in the adult male 

 plumage. Glossy black; belly clear yellow; 

 throat-patch scarlet. Upper tail-coverts, bar 

 on wing-coverts, and two stripes on face, one 

 back of eye and a parallel one below it, white. 

 The female differs greatly. Body continuously 

 barred crosswise with black and white. A 



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