BACHMAN'S WARBLER 77 



Biographical References 



(i) Wm. Brewster, On the Relationship of Helminthophaga leucobron- 

 chialis Brewster, and Helminthophaga lawrencei, Herrick, Bull. Nutt. Orn. Club, 



VI, 1880, 218. (2) R. RiDGWAY, Helminthophila leucobronchialis, (and H. 

 lawrencei; a discussion of their relationships). Auk, II, 1885, 359. (3) A. K. 

 Fisher, Evidence Concerning the Interbreeding of Helminthophila chrysoptera 

 and H. pinus (at Sing Sing, N. Y.), Auk, II, 1885, 378. (4) F. M. Chapman, 

 Additional Captures of Helminthophila leucobronchialis (at Englewood, N. J.), 

 Auk, IV, 1887. 348. (s) The Song of Helminthophila leucobronchialis. Auk, 



VII, 1890, 291. (6) On the Breeding of Helminthophila pinus with H. 

 leucobronchialis at Englewood, N. J., Auk, IX, 1892, 302. (7) E. H. Fames, 

 Notes on Helminthophila leucobronchialis (in Conn.), Auk, V, 1888, 427. (8) 

 Notes on the Blue-winged Warbler and its Allies, (Helminthophila pinus, H. 

 leucobronchialis, H. lawrencei, and H. chrysoptera) in Connecticut, Auk, VI, 

 1889, 305. (9) L. B. Bishop, Helminthophila pinus, H. chrysoptera, H. leuco- 

 bronchialis, H. lawrencei, in Connecticut in the Spring of 1888, Auk, VI, i88g, 

 192. (10) Helminthophila leucobronchialis (breeding in Conn.), Auk, XI, 

 1894, 79- (11) The Status of Helminthophila leucobronchialis and Helmintho- 

 phila lawrencei. Auk, XXII, 1905, 21. (12) J. H. Sage, The Interbreeding of 

 Helminthophila pinus and H. chrysoptera, (at Portland, Conn.), Auk VI, 1899, 

 299. (13) Notes on Helminthophila chrysoptera, pinus, leucobronchialis and 

 lawrencei in Connecticut, Auk, X, 1893, 208. (14) Nesting of Helminthophila 

 leucobronchialis in Connecticut, Auk, XII, 1895, 307. (15) G. H. Thayer, The 

 Coloration and Relationships of Brewster's Warbler, Auk, XIX, 1902, 401. (16) 

 I. Bildersee, Notes on the Nesting of Lawrence's Warbler, Bird-Lore, VI, 1904, 

 131. (17) C. Wm. Beebe, Breeding of Lawrence's Warbler in New York City, 

 Auk, XXI, 1904, 387. Relates to the same bird as No. 16. (18) W. E. D. Scott, 

 Of the Probable Origin of Certain Birds, Science, XXII, 1905, 271. (19) J. A. 

 Allen, The Probable Origin of Certain Birds, Science, XXII, 1905, 431. (A 

 reply to Scott.) (20) J. Dwight, Jr., Plumages and Molts of the Passerine Birds 

 of New York, 1900, 246. (21) J. C. A. Meeker, A Male Golden-winged Warb- 

 ler mated with a female Blue-winged Warbler, Auk, XXIII, 1906, 104. (22) 

 C. J. Maynard, (Discussion of status of Brewster's and Lawrence's Warblers) 

 Warblers of New England, 1905, 83. 



BACHMAN'S Warbler 



HELMINTHOPHILA BACHMANI (Aud.) Plate IV 



Distinguishing Characters. — Bill slightly decurved ; d* with the forehead, 

 throat, or, at least, chin yellow, the breast black ; $ with forehead more or less 

 tinged with yellow, the feathers of the crown wholly gray. The young ?, with 

 but little yellow below, resembles the young of the Orange-crowned and Ten- 

 nessee Warblers. It differs from the former chiefly in the yellowish frontlet, 

 entirely gray crown-feathers, and white crissum ; while the Tennessee Warbler 

 is greener above with the head the same color as the back. The c? apparently 

 does not acquire mature plumage until the second year. Length (skin), 4.40; 

 wing, 2.40; tail, 1.80; bill, .48. 



