^32 NORTH AMERICAN BIRDS-. 



ochraocous. deepest laterally, the posterior portion usually with a few 

 longitudinal streaks of dusky. Hith. Tropical America, north to Mid- 

 dle Me.xico. 



Falco communis, Gmel. 



Vnr. nnatum, IIonap. 



AMEBICAN FEBEGBINE FALCON; DUCK HAWK. 



1 Accipitcr falcu maculatus, Hriss. Oni. I, 3-29. ? Falco luvvius, (;.mki,. S. N. 1789, 271. 

 Fiiho cumiiii ais f, and F. communis n, Latm. In<l. Orn. p. 31. Falco cotiimunl-i, 

 L'oflis, Key, 1872, 21», f. 141. F«/co i>nrijri,uis, Oiin. Wils. Am. Orn. 1S08, pi. l.xvi. — 

 S.vu. L. Trans. XII, 529. — Itnii. Tany's 2d Voy. Aj.p. ;U2. — In. F. li. A. 11,1831, 

 23. — Iio.SAi>. N. Y. Lye. II, 27. — In. Isis, 1832, 113(i ; (.'.msp. 185(1, 23, Xo. 4. — 

 Kiso, Voy. Beag. I, 1839, .532. — James. Wils. Am. Orn. 077, Synop. 1852, 683.— 

 Wi:nDKl!B. Jard. C'ontr. to Orn. 1849, 81. — AVoiU)it. Sitgr. Zuni, 1853, GO. — GiUAi'l), 

 B. Long Island, 1844, 14. — Pkalk, U. S. E.\. E-k. 1848, Gti. — (iiiAY, Li.st B. Brit. Mas. 

 1841, 51. Falco aualiim, Bo.NAl'. Eur. k N. Am. B. 1838, 4. -- Ib. Rev. Zoiil. 1850; 

 484. — Bkidc. Proc. Zoijl. Soc. pi. xi, 109. — In. Ann. N. II. XIII, 499. — Oossk, B. 

 Jam. 1847, 1«. — Ca.ss. B. Cal.&Tex. 1854, SG. — In. Birds N. Am. 1858, 7. - DkK.w, 

 Zool. N. V. II, 13, pi. iii, t. 8. — Nrrr. .Man. 1833, 53. — Pkao. B. Miuss. 1841, 83. 

 — S ruK-KL. Orn. Syn. I, 1855, 83. — Bi.aki.st. Ibis, III, 18G1, 315. — Makcii, Pr. Ac. 

 N. S. 18G3, 304. Falco nirjricrps, t'Ass. B. C'al. & T.'x. I, 1853, 87. — In. Birds N. 

 Am. 1858, 8. — Stukki,. Orn. Syn. I, 85. —Coop. & SrcKi.. P. It. U. licp't. VII, ii, 

 ISCO, 142. — Oi:av, Rami List, I, 1SG9, 19, No. 1G6. — Shaim'K, Ann. & Mag. N. H. 

 Falco oriental i.i, (G.m.) Guay, Hand List, 1, 1869, 19, No. 1G5 (in part). } Falco 

 cassini, SuAnri;, Ann. & Mag. N. II. 



Sp. Char. Adnlt (<J, 43,134, Fort Resolution, Brit, N. Am., Tune; J. Lockharl). 

 Upper parts dark Llui.sh-plnmlioous, approaching black anteriorly, but on rump and upper 

 tail-covcrts becoming fine bluish plnmbeous-ash. On the head and neek the continuou.s 

 plumbcous-blaek cover.s all the Ibriner except the chin and throat, and the back portion 

 of the latter; an invasion or indentation of the white of lower parts up behind the ear- 

 coverts scparatinfr that of the cheeks from the posterior black, throwing the former into 

 a prominent angular patch ; fori.'liead and Inrcs grayish. All the feathers above (posterior 

 to the najie) with transverse bars of idnmbeons-black, these most .shaiply defnied 

 posteriorly, where the iihnnbeous is lightest. Tail black, more plnmbeons basally, very 

 faintly paler at the tip, and showing ten or eleven transverse narrow bands of plumbeous, 

 these nujst ilislinct anteriorly; the b.irs are clearest on inner web.s. Alula, primary 

 and secondary coverts, secondaries and [irinuuies, uniform jdnmbeons-black, narrowly 

 whitish on terminal margin, most observable on secondaries and inner primaries. Lower 

 parts white, tinged with delicate cream-color, thi.s deepest on the abdomen; sides and 

 tibiic tinged with bhii.sh. Chin, throat, and juguluni imnmcnlate ; the breast, however, 

 with faint longitudinal .shaft-streaks of black ; sides. Hanks, and tibiaj distinctly barred 

 transversely with black, about fonr bars being on each feather; on the lower tail-coverts 

 they are narrower and more distant ; on the abdomen the markings arc in the form of 

 circnlar .spots ; anal region barred tr.ansversely. Lining of the wing (including all the 

 under covert.s) white tinged Avith bine, and barred like the sides; under snrface of 

 primaries slaty, with elliptical spots or bars of creamy-white on inner webs, twelve on 

 the longest. Wing-formnla, 2 - I - 3. Wing, 12.2.") ; tail, 0.00 ; tarsus, l.CO ; middle toe, 

 1.8'); outer, 1.40; inner, 1.20; posterior, .80 ; cnlmcn, .80. 



9 (13,077, Liberty Co., Georgia; Professor J. L. Leconte). Like the male, but 

 ochraceons tinge beneath deeper ; no ashy wash; bands on the tail more sharply defined, 

 about ten dark ones being indicated ; outer surface of primaries and secondaries with 



