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BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



near the shaft; fourth quill longest; third scarcely shorter; second 

 shorter than fifth; first intermediate between eighth, and ninth; iris 

 dark brown; cere, tarsi, and toes, yellow; bill and claws bluish black. 

 Adulf female. — -Similar to the male, but the slate-gray above darker, 

 the fasciae of the wings hardly observable; front and throat scarcely 

 whitish; rump almost pure^. black; second tail band much broken and 

 restricted; ashy prevailing on the chest; ashy bars beneath rather 

 broader. 



Figure 22. — Buteo'^{AstuTina) nitidus. 



Juvenal male. — Above, from bill to upper tail coverts, dark bister- 

 brown, almost black; feathers of the head and neck edged laterally 

 with pinkish ochraceous, or fairly dark cinnamon-buff; scapulars 

 with nearly whole outer webs of this color, being blackish only along 

 edges and at ends; middle wing coverts spotted with the same; sec- 

 ondaries and primaries faintly tipped with whitish; secondaries with 

 indications of darker bands, and outer webs of primaries with still more 

 obscure ones; upper tail coverts white, with sagittate specks of black, 

 one or two on each; tail umber brown (considerably lighter than the 

 wings), tipped with pinkish gray (this passing terminally into dull 

 white), and crossed with six or seven bands of black (these becoming 

 gradually, but very considerably, narrower toward the base); 



