BIRDS OF NORTH AND MIDDLE AMERICA. 



495 



Adult female in wmiJer.— Similar to the summer female, but plumage 

 of softer texture and posterior wing-band more or less tinged with 

 yellowish. 



Immatfwre male (second year). — Identical in coloration with adult 

 female. 



Young ■male, first plumage. — Pileam, hindneck, back, scapulars, 

 rump, and upper tail-coverts plain dull olive or brownish olive; supra- 

 auricular region and sides of neck dull yellowish buffy, the latter 

 tinged with olive; chin, throat, and chest dull yellowish buffy; other- 

 wise like adult female. 



Young female, first plumage. — Similar to the young male but paler 

 and grayer above; supra-auricular and post-auricular regions pale 

 brownish buffy; chin, throat, and chest still paler buffy, the chin and 

 upper throat dull buffy whitish. 



Adult male.— Length (skins), 113-129 (120);' wing, 72-78 (74.8); 

 tail, 50-56 (53.6); exposed culmen, 9.1-12 (10.7); tarsus, 17-20 (18.2); 

 middle toe, 10.5-13 (11.2).' 



Adult female.— Ijength (skins), 110-125 (117);" wing, 67-73 (69.9); 

 tail, 47.2-53 (49.4); exposed culmen, 9-12 (10.5); tarsus, 17-20 (18.2); 

 middle toe, 10.4-12 (11.5).* 



Highlands (coniferous belt) of Mexico, Guatemala, and southwestern 

 United States; north to central Arizona (Huachuca, Chiricahua, Santa 



^Length before skinning of six Arizona specimens, 127-137.2 (134.2). (Brewster, 

 Bull. Nutt. Orn. Olub, vii, 1882, 137.) 



'Sixteen specimens. 



'Length before skinning of five Arizona specimens, 127-132.1 (129.5). (Brewster, 

 Bull. Nutt. Orn. Club, vii, 1882, 137.) 



■•Thirteen specimens. 



Specimens from different geographic areas average in measurements as follows: 



There is an appreciable difference in size and coloration between specimens from 

 Arizona and northwestern Mexico on the one hand and those from Guatemala on 

 the other, the latter being smaller and brighter colored; but specimens from southern 

 Mexico, while nearer the Guatemalan examples in coloration, are larger even than 

 the Arizona birds. On the whole, I am unable to make out satisfactorily two, or 

 more, geographic forms, and therefore reduce P. o. auraniiacus to a synonym of P. 

 olivaceus. 



