STERCOIlAKIlDiE — THE SKUAS AND JAEGERS — STERCOliAlii US. 66\ 



Stercorarius longicaudus. 



THE ABCTIC JAEGER ; LONG-TAILED JAEGEB. 



Stercorarius longicaudus, Vikill. Nouv. Diet. XXXII. 1819, 157. — Ste.jnegei;, Proc. U. .S. Nat. 



Mus. Vol. 5, pp. 40-42. 

 Stercorarius longicaudattis, De Selys, Faune Belg. 1842, 156. 

 Lcstris parasitica, Illig. Prodr. 1811, 273. — Less. Man. II. 1828, 288 (nee Linn.). — Sw. & PvicH. 



F. B. A. IL 1831, 430. — NuTT. Man. II. 1834, 317. 

 Lestris 2mrasiticus, Temm. Man. Oin. ed. 1815, 512. — AuD. Oin. Biog. III. 1835, 470; B. Am. VII. 



1844, 192, pi. 452 ; Synop. 1839, 333. 

 Stercorarius parasiticus, Saunders, P. Z. S. 1876, 330. — RiDow. Nom. N. Am. 15. 1881, no. 699. 

 Lestris crepidata, Buehm & Sciiill. Beitr. z. Vog. IIL 1822, 861 (not of Banks, 1713). 

 Lcstris Buffoni, Boie, Meyer's Taseh. III. 1822, 212. — De Kay, N. Y. Zool. II. 1844, 315, pi. 133, 



fig. 291. 

 Stercorarius Buffoni, CouES, Pr. Phil. Ae. 1863, 136 ; Key, 1872, 309 ; Check List, 1873, 542 ; ed. 2, 



1882, no. 767 ; B. N. W. 1874, 615. 

 Stercorarius ccpplms, Steph. Shaw's ZooL XIII. 1826, 211, pi. 23. — Lawu. Baird's B. N. Am. 1858, 



840. — Baird, Cat. N. Am. B. 1859, no. 655. 

 Lcstris microrhynchus, Brehm, Handb. Vog. Deutsehl. 1831, 725. 

 Lestris Lessoni, Degl. Mem. Ac. \i. Lille, 1838, 108. 

 Lcstris hrachyrhynchus, Breiim, Vogelf. 1855, 337. 



Lcstris Ha.rdyi, Bonap. Tabl. d. Longipenn. Compt. Rend. 1856, 770 ; Consp. II. 1857, 210. 

 Lcstris Brissoiii, "Boie," Degl. & Gerbe, Orn. Eur. II. 1867, 400. 



Hab. Northern part of northern hemisphere, breeding in Arctic districts, and. migrating south 

 in winter to the Northern United States. 



Sp. Char. Adult, light phase : Entire pileum and upper part of nape, including lores, malar 

 region, and orbital region, sooty black ; rest of the head and neck, including lo\ver portion of the 

 nape, straw-yellow, paler on the chin and throat. Remaining upper parts rather dark brownish 

 cinereous or slate-color (more ashy on the back, Avhere lighter anteriorly), the remiges and rec- 



trices darker, especially toward ends, where nearly dusky blackish. Jugnlum (sometimes the breast 

 also, or, rarely, even the abdomen) white, shading gradually into grayish, the entire crissum, flanks, 

 sides, and usually the abdomen being uniform deep ash-gray, becoming gradually lighter ante- 

 riorly. " Bill grayish black, the upper part bluish ; iris brown ; feet black, but with the greater 

 part of the tarsus yellow " ^ (Audubon). 



Total length, about 23.00 inches; extent, 45.00; wing, 11.55-12.85 (average, 12.25) ; central 



^ In life, the color of the tarsi is light grayish blue, which in dried skins sometimes changes to yellow. 



