AVES FALCONID/B. 595 



Eyebrow and face below the eye whitish ; ear-coverts slaty blue, but some- 

 what shaded with brown ; facial ruff slaty blue. 



Neck : Above and on the sides slaty blue, but shaded with brown. The 

 chin slaty blue, the center of each feather darker, giving a streaked ap- 

 pearance here. Lower neck and breast barred more or less definitely 

 slate and white, but with a strong infusion of cinnamon in the slaty bars ; 

 these bars become definitely cinnamon on the lower breast 



Back : Deep slaty brown on upper back ; each feather of the lower back 

 and rump edged with pale cinnamon or rufous; the upper tail-coverts 

 pure white, with arrow-shaped subterminal markings of dull cinnamon 

 brown. 



Tail : From above when closed, clear slaty blue, with six narrow bars, 

 and a subterminal band of dull brownish black, much suffused by the frost- 

 ing of slaty which prevails and ashy white tips terminating each feather ; 

 when spread, all but the two central rectrices are largely white, except on 

 outer webs, and even here the lighter color is introduced somewhat on the 

 second pair of rectrices and in increasing amount till on the outer pair there 

 is little of the slaty blue terminally on the outer web. Each feather is 

 barred with five sharply defined bars and has a broad, subterminal, dusky 

 band, and a white tip. As the outer rectrices are reached, a strong cinna- 

 mon tint is developed, especially in the bars nearest the base of each 

 feather and a cinnamon tone pervades the white areas to some extent ; 

 on the outer tail-feather four of the five bars are definitely cinnamon and 

 on the second tail-feather three are the same color, while the subterminal 

 band and the bar next it are not invaded by cinnamon on either of the two 

 outer tail-feathers. From below, the tail is definitely white and the barring 

 strong and distinct, dark, blackish brown, save on the outer feather, which 

 is only notched with obsolete, dull brown. The subterminal band appears 

 as a bar only a little wider than the others, when seen from below. 



The wings are like those described, save that the upper coverts are all 

 strongly margined narrowly with dirty white and now and then cinnamon 

 invades these marginal markings to the exclusion of the lighter shade. 



While, on the whole, this phase looks at a glance very like the mature 

 adult male, the differences are constant and distinguish this age of the 

 bird at once. It appears to be the first breeding plumage of the adult 

 male and probably only obtains for one season. 



Brown phases of plumage. Adult female (cited above). 



