BIRDS OF NOKTH ANJJ MIDDLE AMERICA. 



121 



greenish blue or steel gray ; inner webs of primaries except innermost 

 (first) witli middle portion extensively white, this sometimes obsolete 

 on outermost (tenth) and second; bill, legs, and feet black; iris red 

 (carmine); length (skins), 167-196 (IS-t.J:); wing, 90-90 (94.6); tail, 91- 

 105 (96.1); exposed culmen, 10-12 (10.8); tarsus, 16-19.5 (17.6); middle 

 toe, 12-15 (13.8).« 



Ad id t female. — Plain olivaceous mouse gray, the longer feathers of 

 crest black edged with gray; wings and tail dusky (the latter nearly 

 black), faintly glossed with bronzy greenish; lesser wing-coverts mar- 

 gined with gray; middle coverts broadly margined terminally with 

 white, the greater coverts and tertials edged (more or less broadly) 

 with the same, the primaries more narrowly edged with white or pale 

 gray; rectrices edged with deeper gra}^, becoming white on outermost 

 rectrices; under tail-coverts broadly margined with white; inner webs 

 of primaries pale brownish gra}^ basally, but without any definite 

 light-colored area; bill and feet brownish black or dusky brown; iris 

 brown ?; length (skins), 168-190 (180); wing, 86-96 (90.5); tail, 83-96 

 (89.7); exposed culmen, 11-12 (11.5); tarsus, 17-19 (18.2); middle toe, 

 12-15 (13.3).^ 



Young (both sexes). — Similar in coloration to the adult female but 

 slightly browner gray; greater wing-coverts and secondaries edged 

 with brownish white or pale buffy gray instead of pure white, the 

 mid'dle and greater coverts tipped with the same; under tail-coverts 

 >vith pale margins much less distinct; longer feathers of crest entirely 

 dusky or with indistinct pale edging; texture of plumage veiy differ- 

 ent — much more lax. 



Immature males are variously intermediate in color between adults 



« Twenty-three specimens. 



''Fifteen specimeng. 



Specimens from the southern portion of the Mexican plateau are tlie largest, those 

 fnjui California the smallest, average measurements according to locality being as 

 follows: 



No color difference, according to locality, is observable in the very extensive series 

 examined. 



