66 



JAE' 



.S AND SKL'AS. 



Ill 



i 





m 



'■"i' 



li' '■! » 



'^^h.. 



coast, and more rarely througli the Great Lakes, ami winters from Lonj; Inland 

 Koutliwaril. 



Loii^; Islaml, rcj^'iilar t'rniii .hmc 1') tn Oi't. !!(). Sin<.' Sinj,', A. \'. 



,\'«<(/, on tlic ^'iniiiiil. /:';/;/•••■, two In tlirce, tleeji oli\ f-ilnil) .sj>arinj.'ly s\>(>l- 

 ted with slate eolor, ainl li;rlit and dark raw -iinilier niarkin.i^s and l)laek dots, 

 ehietly at the larf.'er end, where they iReunie eDnlluent, 2"J.J x 1-70 (Brewer;. 



37* Stercorarius parasiticus ( lAim.). I'AiEAsiTn- Jakokk (seo 

 Flj^. ti, a). All., tiijlit y//(a*<.- Haek, wini.'s, and tail slaty t'useous; top of the 

 liead and lores nearly blaek ; sides of the head and back of the neek straw- 

 yellow, this eolor sometimes spreadinj,' down the sides of the neek and on 

 the throat; brea.st and belly white; sides of the brt^ast, Hanks, lower l>elly, 

 and crissum slaty fuseous; tarsi and feet (in dried speeimens) blaek; middle 

 tail-feathers pointed and extending,' about ;)'0U beyond the otiiers. Ad., dark 

 phase. — Entire i)lumaye dark, slaty brown, ilarker on the top of the head; 

 under parts slightly lighter; sometimes a traee of straw-yellow on the sides 

 and baek of the neek ; tarsi, feet, and tail lus in tlie preeeding. /;«., lujht 

 jihaxe. — L'pper parts, wings, and tail fuseous; the feathers of the baek, neek, 

 and head more or less bordereil, tipped, or barred with bully ; hind-neek and 

 head sometimes butfy, streaked or barred witli fuseous, and varying from 

 this color to i)lain fuseous; longer, lateral upper tail-eoverts barred with 

 burt'y ; tail butfy, whitish at the Imse ; uutler wing-eoverts barred with butly ; 

 under parts white, washed with butfy, and irregularly barred with sooty 

 fuseous; these bars sometimes very numerous when tlie under j)arts looked 

 as if washed with sooty fuseous; again, they may be less numerous and eon- 

 lined to the breast and sides, leaving tlie belly white; central tail-feathers 

 pointed, projecting more or less beyond the rest. //«., <larl' phase. — Sooty fus- 

 cous, the feathers, particularly on the under parts, more or less marked with 

 ochraceous-buff. L., 17-00; W., 13-00: T., Ad., 8-(10, Im., 6-40; B., 1-15. 



Rtviarks. — This species closely resembles S. h.ngicaudus. Adults of both 

 species, whether in tin; dark or light jihase of plumage, may always be dis- 

 tinguished from each other by the ditference in the length of their central 

 tail-feathers, in addition to the characters given in the key. Young birds 

 can not be distinguishetl by color, but nuiy be identified by the ditferenees in 

 relative proportions of the bill. 



Eauffe. — " Northern parts of the northern hemisphere, southward in win- 

 ter to South Africa and South America" (\. O. V.). In America breeds 

 in tiie Barren Grounds ami Greenland ; migrates southward through the Great 

 Lakes and along the Atlantic coasts, and winters from the Middle States 

 southward. 



Long Island, regular from June 15 to Oct. 30. 



Nest, on the moors or tundras, a sliglit depressi<m in the ground scantily 

 lined with grasses, etc., or on rocks by the sea. Juj'j^, two to four, light olive- 

 brown, with frequently a strong greenish tinire and chocolate nuirkings, more 

 numerous and .sometimes confluent at the larger end, '2-25 x 1-65. 



88. Stercorarius lon^caudus Vicill. Lono-taileu Jakger. 

 Ad., light phase.— Wvrnk, wings, and tail slaty fuscous ; top of head and lores 

 nearly black ; sides of the head, back and sides of the neck straw -yellow ; 



