IN JERDuN OR STRAY FEATHERS. 335 



head bars ; the central portion of the bar bright rufous, the 

 lateral portions dark browu ; these bars are much the shape that 

 Sea-gulls are often represented in pictures, the head and body 

 portion of the bar (if I may so express myself), being rufous 

 and the wings dark brown ; the sides are very rufous ; the 

 lower abdomen and tibial plumes are buffy white, with still 

 narrower transverse arrow-head brown bars ; the lower tail- 

 coverts yellowish white, each faintly tipped rufous. — Rume 

 " Rough Notes." 



27.— Aquila mogilnik, S. G. Gm. 



Dimensions. — Males. — Length, 28'5 to 30'5 ; expanse, 69'0 

 to 76-0; wing, 20'75 to 28-0 ; tail from vent, 10-5 to 125; 

 tarsus, 3-38 to 4*0; bill from gape, 2-13 to 2 ! 63 ; weight, 4--0 

 to 5*5 lbs. 



Females.— Length, 30-0 to 32-63 ; expanse, 70-0 to 85-0 ; 

 wing, 23-0 to 24r5 ; tail from vent, 12-0 to 14-0 ; tarsus, 3-75 to 

 4-06; bill from gape, 275 to 3-13; weight, 6-25 to 8-75 fts. 



This bird has two well-marked stages of plumage. 



1st. — The general character of this stage is lineated. The 

 under parts with broader or narrower pale centres to the 

 feathers, and the upper parts with pale central stripes. What 

 I take to be the earliest form of this stage has the head and 

 nape brown ; the feathers tipped and margined with pale 

 yellowish brown ; the upper back, scapulars and lesser wing- 

 coverts darker brown, most of them showing faint traces of 

 paler centres and tips ; and some faintly margined slightly 

 paler. 



The lower back is buffy ; a patch on the rump being mottled 

 with brown ; the upper tail-coverts fulvous white ; the tail 

 feathers pale wood brown, much abraded with dirty fulvous 

 tips, and showing, towards the bases, traces of a mottled, paler 

 and darker barring. The primary quills are dark brown, almost 

 black ; the secondaries aud tertiaries paler and dingier brown, 

 with a mere trace of a fulvous white tipping, but the tertiaries 

 are a good deal mottled with fulvous white; the median aud 

 greater wing-coverts are here and there tipped with fulvous 

 white, but many are not so ; the chin, throat, sides of the neck, 

 breast and abdomen are pale buffy brown ; the feathers mar- 

 gined with darker brown, which latter, however, is very narrow, 

 and almost wanting on most of the throat feathers, while it 

 occupies the greater portion of the feathers on the lower breast 

 and abdomen; the tibial plumes, vent, and lower tail-coverts 



