CERCHNEIS AMURENSIS, 
(THE AMURIAN KESTREL.) 
Falco vespertinus, Schrenk, Reis. Amurl.,Yog. p. 230 (1860). 
Erythropus vespertinus, Horsf. & Moore, Cat. B. E. I. Co. Mus. no. 13, p. 14 (1854) ; Swinh. 
Ibis, 1861, pp. 253, 327, et P. Z. S. 1862, p. 315; Jerd. B. of Ind. i. p. 40 (1862); 
Hume, Rough Notes, i. p. 106 (1869); Jerd. Ibis, 1871, p. 243; Legge, Str. Feath. 
1873, p. 487; Hume, Str. Feath. 1875, p. 22. 
Falco vespertinus, var. amurensis, Radde, Reis. Sibir. ii. p. 102, Taf. 1. figs. 1-3 (I 860 ). 
Erythropus amurensis , Gurney, Ibis, 1868, p. 41, pi. 2; Swinhoe, P. Z. S. 18/0, pp. 436, 
448, 1871, p. 340, et Ibis, 1873, p. 96, et 1874, p. 425; Hume, Str. Feath. 1875, 
p. 22 . 
Tinnunculus amurensis. Gray, Hand-1. B. i. p. 23 (1869). 
Falco raddei, Finsch u. Hartl. Vog. Ostafr. p. 74 (1870). 
Cerchneis amurensis, Sharpe, Cat. B. i. p. 445, et Str. Feath. 1875, p. 303; Legge, ibid, 
p. 362 ; Inglis, ibid. 1877, p. 6 ; Hume, ibid. p. 7. 
Falco amurensis, Dav. & Oust. Ois. de la Chine, p. 34 (1877). 
Le Kobez de l' Amour, David & Oustalet. 
The Eastern Red-footed Kestrel, Radde’s Kestrel, The Orange-legged Hobby, The Red-legged 
Hobby, The Red-legged Falcon of Indian writers ; White-claioed Kestrel , Blyth ; Ingrian 
Falcon, Lath, (apud Horsf.). 
Karjanna, Karjoona, Hind. (Jerdon). 
Adult male. Length to front of cere 9-8 to 107 inches ; culmen from cere 0-5 ; wing 8-8 to 9-2 (in a South-Afncan 
example in the British Museum, 9-5); tail 4-75 to 5-0; tarsus IT to 1-2 ; mid toe 0‘95 to 1'0, claw (straight) 
0*38 
Iris brown ; cere (all but the tip of bill), orbital skin, and eyelid gamboge-yellow ; tip of bill dark leaden : legs and feet 
gamboge-yellow, claws whitish horn-colour. 
Head, hind neck, back, wings, and tail dark slate, the forehead darker than the crown, and the rump paler than the 
back ; the interscapular region, scapulars, and shoulder of the wing suffused with blackish ; quills slate-grey, the 
shafts black and the inner part and under surface of web brownish ; shafts of the tail-feathers brownish black ; 
cheeks, cheek-stripe, and ear-coverts concolorous with the head ; chin, throat, sides of neck, breast, and flanks 
bluish ash-colour, palest ou the throat, the shafts of the breast-feathers more or less conspicuously dark , bell) , 
thighs, and under tail-coverts dark rufous ; under iving-coverts and axillary plume white, with dark shafts in 
examples which have them conspicuously so on the breast. 
A younger stage of the adult phase has the throat and round the cheek-stripe whitish, and the under parts paler ash) 
than in the above-described old dress ; the abdomen and under tail-coverts are also paler or yellowish rufous. 
Adult female. Wing 9-4 to 9'6 inches. 
Soft parts as in the male. 
Above leaden-grey, paling to bluish ashy on the rump and tail ; the head and nape suffused with brownish, and the 
feathers with dark shaft-stripes ; bases of the hind-neck feathers rufous-yellow, showing across that part ; back 
and wing-coverts barred with brownish black ; quills blackish, the inner webs crossed with bar-like spots of whitish ; 
tail crossed with seven or eight blackish-brown bars and a broad subterminal band of the same. 
Eorehead throat, cheeks, and chest whitish buff ; lores and a narrow moustachial streak blackish ; the throat unstreaked, 
but the chest with mesial stripes, and the breast and flanks with arrow-headed bars of blackish brown ; abdomen, 
thighs, and under tail-coverts pale rufescent yellowish, this hue extending further up the breast in some than m 
others ; under wing-coverts white, barred and “ lined ” with blackish brown. 
