234 GRINNELL'S WATER-THRUSH 



never very close together ; one extreme set of five eggs show the wreath 

 about the small end. Size; average, .77X.60, extremes, .81X.61, 73X.58, 

 .74X.63. (Figs. 89-91.) 



Nesting Dates. — Branchport, N. Y., May i8-May 30 {Burtch) ; 

 Lancaster, N. H., June 9, full-grown young following parents (Spauld- 

 ing) ; Pittsfield, Me., May 28- June 9, young about two weeks old. 

 (Knight); Listowel, Ont., May 20-June 10 (Kells). 



Biographical References 



(i) W. L. Kells, Nesting of Some Canadian Warblers, Ottawa Naturalist, 

 XV, 1902, 228. (2) J. M. Swain, Contributions to the Life-History of the 

 Water-Thrush, Journ. Me. Orn. Soc, VI, 1904, 70. (3) Wm. Brewster, Birds 

 of the Cambridge Region, 349. 



GRINNELL'S Water-Thrush 



SEIURUS NOVEEORACENSIS NOTAEILIS Ridgw. 



Subspecific Characters. — Similar to S. noveboracensis noveboracensis, 

 but larger, bill longer, upperparts darker, less olive; line over eye and the 

 underparts whiter. Wing, 3.10; tail, 2.20; bill, .52. 



General Distribution. — Interior of North America northwest to 

 Alaska, southeast to Florida. 



Summer Range. — Western Nebraska (Sioux City), northern 

 Minnesota northwest to Alaska, west to British Columbia. The 

 western line of the district in which the species is common dur- 

 ing migration is found from Nebraska southward at the edge of the 

 Plains; to the westward it has been taken casually in Arizona (near 

 Camp Crittenden, August 1874 ; Catalina Mountains, September 2, 

 1884; Tucson, May 4, 1881 ; Huachuca Mountains, August 31, 1903), 

 Colorado (Denver May 12, 1873; Fort Lyon, May 6, 1886; Boulder, 

 May 14, 1904), Wyoming (Lake Como, May ip, 1878; Cheyenne, Fort 

 Bridger), Utah (Lower Santa Clara Valley, May 11, 1891), Idaho 

 (Hellgate), Washington (Camp Moogie). 



In migration occurs eastward casually to New Jersey, District of 

 Columbia, and more commonly in the southeastern Atlantic States. 



Winter Range. — The West Indies, Mexico, Central America and 

 northern South America. 



The Bird and its Haunts. — This western form of the Water- 

 Thrush resembles in habits the closely related Northern Water-Thrush. 



Nelson says that in Alaska it is abundant in the interior as well 

 as at the mouth of the Yukon, "in fact, is one of the most common 

 bush-frequenting birds throughout the entire fur countries, extending 

 north even beyond tree limit." 



