192 



ZOOLOGY BIEDS. 



DENDBOICA AESTIVA (Gm.). 

 Yellow Warbler. 



Motacilla cestiva, GM., Syst. Nat,, i, 1788, 990. 



Nylvicola (estiva, WOODH., Sitgreave's Exp. Zniii & Col. Eiv., 1854, 70. 



Dendroica cestiva, BD., U. S. & Mex. Bound. Surv., ii, pt. ii, 1859, Birds, 10. BD., 

 Birds N. A., 1858, 282. HEERM., P. K. E. Hep., x, pt. iv, 1859, 40. XAN- 

 TUS, Proc. Acad. Nat. Sci. Phila,, 1859, 19 (Fort Tejo.n, Gal.). COOP. & 

 SUCKL., P. E. E. Eep., xii, pt. ii, 1860, 181. HAYD., Trans. Am. Phil. Sot-., 

 xii, 1802, 101. BD., Rev. Am. Birds, i, 1865, 195. COTJES, Proc. Acad. Nat. 

 Sci. Pbila., I860, 69 (Fort Whipple, Ariz.}. COTJES, Proc. Acad. Nat. 

 Sei. Phila., 1808, 83. COTJES, Key N. A. Birds, 1872, 97, and of late 

 writers. ALLEN, Bui. Mus. Comp. Zoo'l., 1872, 175 (Kansas; Colorado; 

 Tjtali). SNOW, Birds Kan., 1872, 7. MERRIAM, U. S. Geol. Surv. Terr., 

 1872, 675 (Ogden, Utah). BD., BREW., & EIDG., N. A. Birds, i, 1S74, 

 223, pi. xiv, f. 1. YARROW, Eep. Orn. Specs., 1871, Wheeler's Exped., 

 1874, 34. YARROW & HENSIIAW, Eep. Oru. Specs., 1872, Wheeler's 

 Exped., 1874, 10. HENSHAW, Eep. Oru. Specs., 1873, Wheeler's Exped., 

 1874, 58, 74, 102. Id., An. Lye. Nat. Hist. N. Y., si, 1874, 4. 1(7., An. 

 List Birds Utah, 1872, Wheeler's Exped., 1874, 41. ALLEN, Proc. Bost. Soc. 

 Nat. Hist., June, 1874, 15, 17, 22. COITES, Birds Northwest, 1874, 54. 



The Yellow Warbler was seen frequently in Utah, especially in the vicinity 

 of towns. In Colorado, New Mexico, and Arizona, it is a common bird ; the 

 deciduous trees of the streams on the plains being its ordinary resort. 



In Southern Colorado, several nests were obtained, and showed a simi- 

 larity in structure to the usual style. One made of sheeps' wool and hempen 

 material, lined with fine grasses and feathers, has more the appearance of a 

 flycatcher's nest. Except that it is thicker and more carefully made, it 

 might be mistaken for that of Empidonax pusillus. The ground color of the 

 eggs taken in the West is pure white, and lacks the greenish tinge which 

 is charactersitic of all eastern specimens I have seen. 



