314 NORTH AMERICAN BIRDS. 



Aquila chrysaStus, mh. canadensis (Lixx). 



OOLSKNEAOLK; BINO-TAILED EAGLE. 



Jqiiila chriisKcfiis (not of Linn 1), Kiiii. & Sw. F. I'.. A. II, IS;!!, 12. — .lAun. (Wii.s.) Am. 

 Oin. II, 1SL!2, 304. — \',i>s\v. I,i.-;t, IS^S, 2. — All). Sviiop. 18;i!i, <), - DkKay, Zoiil. 

 N. Y. II, 4, pi. vi, f. H (,/»!•.). — t'.vss. n. Cal. & Ti'.v. lu'.t. — SrisicKl,. Orii. Syii. I, 

 .5.') (ill jiait).— Hkkwkk, Oolofiy, 18;'>", •15. — C'oi'ks, Key, 1872, 210. Faico clirijsae- 

 tiis, (Linn.) M.\x. Ciili. .f. 1858, VI, !l. — Hi-.v.s. I'.ri-. XVI, Vcr.s. Dcutsch. Oiu. 1802, 

 83 ("iilisoliitcly iilciitiial with Kuioiicau " ). Fiih-i) miKdliiisi.i, Linn. S. N. {n\. 10), 

 17(50, 88. Aquila miiiiilcnsis, Wii.s. Am. Oni. 1808, pL Iv, f. 1. -Ilr.r.iiM. T. It. It. 

 Rppt. II, 18.^..''., 30. -t'A.ss. Hiiils N. Am. 18r)8, 11. — fofKs, V. A. N. .S. IStiG, 13. 

 — Gray, Ilaml Li.st, I, 40. Falco niijcr, C-mi'.i. S. N. 359. Aquila uobilin, Pall. 

 Zoiig. l{o.s. A.s. 1811. Aquila J'ulm (not ol" Linn !), Nirrr. Man. Orn. 1833, (52.— 

 Pkab. B. Ma.ss. 1841, 71. 



Sp. Char. Adult mah (•J4,l(;7. Fort Crook, North California, Dec. 2'); D. F. rarkin- 

 son). General pluinaire I'uliirnum.s-lilaek, this doepe.-it on the head, thi-oal, lower snrface 

 in general, under siirlaee ol' the wnig.-;, haek. .seapnlans, .shoulilei-.-;, seeoiidarie.<, i)riiiiarie.s, 

 and rump; middle and .<eeondarv \vini;-eovert.'!, upper and under tail-eovert.<, tarsi and 

 inside of tihi;o, consideralily paler, inclininij; to light uinher. Laneeolate feather.i of ocoi- 

 pnt and nape with the ex]io.<ed ])ortioiis light l'ulvou.«, the .shafts blaek ; dusky beneath the 

 surfane. Tail lilaek, somewhat paler on bas.il half, .and with about three irregular, obso- 

 lete xigzag bands of })ale brown (on two middle feathers ashy) ; no coneealed white on 

 bre.nst. Fifth quill longest; third and Iniutli intermediate between fifth and si.\th; seeond 

 eonsiderably shorter than sixth; first intermediate lietween eighth and ninth. Length, 

 ."51.00; e.xtent, 7S.;]0. AViiig. 24.r)0; tail, 1;5.40; eulmcn, l.GO; from b.tse of eere, 2.1"); 

 tarsus, 3.85; middle toe, 2.40; hind elaw (chord) 1.00. 



Adult female (12,00(), Washington, D. C, March 7, 1800; C. Drexler). Almost exactly 

 like the male. Blaek covering forehead, ear-coverts, cheeks, chin, throat, forcneek, and 

 under parts generally (I'xcopt the tarsi, inside and front ol" tibia-, and lower tail-coverts, 

 which are light fidvons, the tarsi palest), more tawny than in the male. The lanceolate, 

 pale, tawny feathers, which in the male cover only the occiput and neck, in the female ex- 

 tend forward over the top of the b.ead, leaving the forehead only blackish. I'pper parts 

 and tail as in the male. Fourth quill longest; third .^lightly shorter th.nii fifth; .second 

 intermediate between sixth and seventh; first intermediate between eighth and ninth. 

 Wing, 20.00; tail, 14.2."); culmen, 1.70; tar.su.s, ;!.80; midille toe, 2.70; hind claw, 2.15; 

 inner toe, 1.90; outer, 2.00; inner elaw, 1.80; middle, 1..'55; outer, 1.10. 



Youuij male (40,084, Camp ftrant, near Tiii'son, Arizona, July l(), 1807; Di-. E. Palmer). 

 Continuous deep sepia-black, with a purplish lustre; breast and .scapulars with large con- 

 cealed spots of pure white; lanceolate feathers of the "mane" dull brown, not con.spicu- 

 ou.sly diflerent from the throat; under surface of ]iriinaries .showing much while li.asally, 

 this most extended on inner feathers. I'pper and under tail-coverts more brownish than 

 the rump, the basal portion white. B.a.sal half or more of tail white (more ashy on outer 



i»il((iiaeluii, Miiiss. Orn. I, 434. Falco mclnuaetu.i, Linn. S. N. 124. Aquila rcfiin, Lkss. Tr. 

 Orn. Fidm/ulvu.f, Linn. .S. N. 17r)0, 125 {i/ouikj). 



List of S/icrimeiin craminrd. — Nat. Mils., 4 ; I'liilad. Acad., 14 ; IJo.st. Soc, 2 ; Mus. ram- 

 bridge, 1 ; .Mus. ,I. C. Sharp, .Tr., 1. Total, 22. 



Mnisurniiriils. — g. Wing, 23.80-24.30; tail, 14.00 - 14.. lO ; ■iilmcn, l.l!S-1.70; tarsus, 

 3.40; middle toe, 2.40 2.45. Spi'cimcns, 2. ?. Wing, 25.00-25.50; tail, 14.00-14.50; 

 culiiicn, 1.80-1.85 ; taiv.is, 3.80- 4.10 ; middle toe, 2.85-3.10. Specimcii.s, 3. 



