MNIOTILT1D.E THE AMERICAN WAKBLKRS. 175 



the black on the hood and throat of the female approach the purity 

 of those parts in the male." (E. A. MEARNS, in Bull. Nutt. Om. 

 Club, ii, pp. 72, 72.) 



In all rich damp woods, both in Illinois and Indiana, I have 

 found the beautiful Hooded Warbler a more or less common species. 

 In the woods of Knox and Gibson counties, Indiana, immediately 

 opposite Mount Carmel, it is particularly abundant, so much so, 

 in fact, as to be one of the most characteristic species. 



Sylvania pusilla (Wils.) 



WILSON'S WARBLER. 



Popular synonyms. Green Black-capped Flycatcher or Flycatching Warbler; "Wilson's 

 Black-cap; Black-capped Yellow Warbler. 



Muscicap a pusilla WILS. Am. Orn. lii, 1811, 103. 

 Wilsonia pusilla BON AP. Comp. List, 1838, 23. RiDGW.Proc. U.S.Nat. Mus. 1880. 173, No. 



125. 



Sylvania pus ilia NUTT. Man. 2d ed. 1,1840,335. 

 Myiodioetes pusillus SCL. BAIKD, B. N. Am. 1858, 293; Cat. N. Am. B. 1859, No. 213; 



Ee view, 1865, 240 COUES, Key, 1872,109; Check List. 1873. No. 102; 2d ed. 1882, No. 



147; B. N. W. 1874, 79, 232; B. Col. Val. 1878, 326. -B. B. & E. Hist. N. Am. B. i, 1874, 



317, pi. 16, figs. 3,4. EIDGW. Nom. N. Am. B. 1881, i, No. 125. 

 Sylvia wilsonii BONAP. Jour. Phil. Ac. iv, 1824, 179. NUTT. Man. i, 1832, 438. 

 Muscicapa wilsonii AUD. Orn. Biog. ii, 1834, 148, pi. 124. 

 Myiodioetes wilsonii AUD. Synop. 1839,50; B. Am. ii,18Jl,2f!,pl. 75. 



HAB. All of North America except Pacific coast, where replaced by a brighter colored 

 (and otherwise different) race, var. pileolata*; breeding from extreme northern border 

 of United States (?) northward to Hudson's Bay and Alaska, where reaching to the coast 

 of Bering's Sea, and across to eastern Siberia. Winters in eastern Mexico, Guatemala, 

 and south to Chiriqui. 



SP. CHAE. Forehead, line over and around the eye, and under parts generally, bright 

 yellow. Upper parts olive-green; a square patch on the crown lustrous black. Sides of 

 body and cheeks tinged with olive. No white on wings or tail. Female similar, the black 

 of the crown duller.or sometimes replaced by olive-green. Length, 4.75; wing, 2.25; 

 tail, 2.30. 



This little bird is found in Illinois only during its migrations, and, 

 like other species, varies greatly in numbers in different years, 

 being scarcely to be found some seasons and abundant at others. 

 It is, however, an inconspicuous species, and may readily pass un- 

 noticed. Its summer home is in the colder regions of the far North, 

 where it breeds from Labrador to Alaska, and north to the limit of 

 tree growth. 



*See ffist. N. Am. B. i.p. 319. 



