632 GEOLOGICAL SURVEY OF CANADA. 
Ist, when we were on a small island about 10 miles below Sixty- 
mile Creek, was the unmistakable alarm note of the water-thrush. 
This was the first time we had met with this species, and before 
starting that morning on our daily Yukon drift, Osgood and I 
each secured a young bird. Near Forty-mile Creek, Tatondu 
River and Charlie Creek water-thrushes were again met with. At 
Circle I saw several August 16th-20th, took one 15 miles above 
Fort Yukon, August 2Ist, and saw two in a thicket at the Aphoon 
mouth August 28th. The young in full plumage taken on the 
Yukon are clove-brown above, including wings and _ tail—far 
darker than is usual in wotabtlis—and have darker streaks below. 
(Lishop.) J havea nest and four eggs taken by Rev. Mr. Stringer 
at the mouth of Mackenzie River, June roth, 1899. Nest on the 
ground under willows near the river bank. (W. Raine.) Fora 
few days after our arrival in August at the site of our new winter 
quarters on the Kowak, Kotzebue Sound, Alaska, this species 
was moderately common. It frequented the alder and willow 
thickets along the streams and was shy and restless. The species 
arrived in the spring on May 22nd, and was henceforth common, 
especially in the Kowak delta in June; but it was not detected 
west of the tree limit. (Gvznnel/.) An immature male was taken 
at Homer, Kenai Peninsula, Alaska, August 18th, 1g01. This is 
undoubtedly a rare bird at Homer, as one specimen was all I 
noted. (Chapman.) 
MUSEUM SPECIMENS. 
Two; one taken at Indian Head, Assa., May 24th, 1892; one at 
Peace River Landing, Lat. 56° 15’ June 24th, 1903, both by Mr. 
W. Spreadborough. 
676. Louisiana Water-Thrush. 
Sewurus motacilla (V1EILL.) BoNAp. 1850. 
A rare summer resident in Middlesex Co., Ont. ; not noted 
further north. (IW. &. Saunders.) The large-billed water-thrush 
is by no means so common a bird in Ontario as the preceding 
species, but along the southern border of the province, wherever 
there is a rocky ravine, its loud, clear notes are almost sure to be 
heard in the spring, mingling with the sound of the falling water. 
It arrives from the south early in May and leaves in September. 
(Mcllwraith.) 
