126 BIItDS OF ILLINOIS. 



8. H. pere^rina. Adult >: Above olive-green, the bond and neck u^h-ffmy, 



without colored crown-pati'h. but whli n narrow duhkjr ulruuk Ihroueli the 

 eye: lower purtH wliltu. Adult t: Biiullur, but sruy of head tlneed with 

 Kroeoish. and white of lower part« Rolled with yi-|lowlsh olive, eBpoelully on 

 Bidea. i'lmng: Head anil neck oIlve-Kreon. Ilko othoi upper parte: lower 

 parU Htrontrly tluged with ollve-yullowlsb, the lower tull-coTerts, however, 

 ahviiys pure white; 



9. H. cincinoatieDsis. Above olive-ereoD, the forehead yellow, and crown blotched 



with black; rest of hoad. with whole lower parts, yellow, the side of bead 

 marked by a broad loral and Huborbltal patch of black. 



Helminthophila pinus (Liun,) 



BLD£-WINO£D WARBLER. 



Popular synonyms.— Bhio-wincpd Yellow Warbler; Blue-wlniced Swamp Warbler. 

 Cerlhia piuiix LiNS. S. N. ed. 12. 1. i;i;6. 1S7. 

 Uelntinllwplittga pinus Bairu. B. N. Am. 185X. i'll; Cat. N. Am. B. 1M9, No. IKO; Review, 

 18&4, 1(4.— CoUES, Key, 187J. 94; Check List, isrs. No. 6J; 2d ed. 1S82, No. 98: B N. \V. 

 1874. 49; B. Col. Val. 1878. 2U.-B. B. & B. Hist. N. Am, B, 1, 1874, 195. pi. 11. llu. 1.- 

 BiDow. Nom. N. Am. 1881, N. 79, 

 Belmiiilliophila pinu.i UiDow, Bull. Nutt. Orn. CI. vli. 18S2. 51, 

 Sj/Zu.a sWirarin Wn,8. Am. Orn. 11, 1810, 109. pi. 15, fls. 4.-Nutt. Man, 1, 1832,410.— AuD. 

 Orn. BloR. i. 18:12. 102. pi. 20. 

 JTeiUnaia solilaria AUD. Synop, 18:19, 69; B. Am. II, 1841, 93, pi. 111. 



Hab. Eastern United States, chiefly south of 40° and west of the Allodhanioa; north, 

 irregularly to Ma.isachusetts and Michigan, and west to border of the Ureal Plains. In 

 winter, eastern Mexico and Ouaiemala. 



Sp. Chab. Adult i: Forehead, fore part of crown, cheeks, and entire lower parts (ex- 

 cept crissum), pure Kamboeo-yol ow. most intense on forehead; crissum and llnineof 

 wlnK white, usually more or lesstinReil with yellow. Occiput, cervix, bafk.scapulirs. and 

 rump, pi iln olive-ercen, brichtest on the rump, where more ilneed with yellow; wines 

 and tail blul-h (jray, the former crossed by two white bands, formed by tips of middle 

 and Krealer coverts; two outer tail feathers with most of the Inner web white, the third 

 with about the terminal half white. Lores and a narrow postocular streak, deep black. 

 Bill wholly deep black: iris brown; lees and feet dull plumbeous, more or lesstinRed 

 with yellowish, espocialiy on soles of toes. In nutumn, similar, but yellow of forehead 

 more or less obscured by ollve-creou; maxilla dark iiluml>eous or brownish bliick, Its 

 edKe, with mandible, dull flesh color, or purplish brown, the latter with a blackish stripe 

 along each side. Adult ,: Similar to the t, but colors appreciably duller. 



Total length, 4.t)5-5.; extent, 7.-7.50; wing, about 2.40-2.50,; tail, 2. -2.10: culmon, .50; 

 tarsuB, .70. 



In half-cleared fields wliieh have grown up to sprouts, and in rich 

 open woods iu the bottom-lands, where the switcii-eane forms a con- 

 siderable proportion of the undergrowth, the Blue-winged Yellow- 

 Warbler is one of the characteristic birds. The male is a persistent 

 singer during the breeding season, and thus betrays his presence to 

 the collector, who finds this of all species one of the easiest to pro- 

 cure. His song is very rude, however, resembling more that of the 

 Yellow-winged Sparrow than any other bird whose song I have 

 heard. The nest is built on the ground, among upright stalks, rest- 

 ing on a thick foundation of dry leaves. 



