A.O Wood & Frothingham, Birds of Au Sable Valley. ["fan 



This terrace continues for a distance of one hundred to two hun- 

 dred yards from the river, and here we saw Robins, Kingbirds, 

 Flickers, Cowbirds, Goldfinches, Vesper Sparrows, Chipping Spar- 

 rows, and Brown Thrashers. 



From this terrace a steep, swampy slope covered with spruce, 

 balsam, white cedar, and tamarack rises eighty to one hundred feet 

 to a morainal topography, the greater part of which presents a dry, 

 sandy surface supporting thickets of jack pine undergrown with 

 sweet fern. Characteristic birds of the slope are the Black-throated 

 Green Warbler, White-throated Sparrow, Whip poor-will, Hermit 

 Thrush, Ovenbird, Song Sparrow, Hairy Woodpecker, and Ruffed 

 Grouse ; while among those of the higher, dry land are the Field 

 Sparrow, Vesper Sparrow, Junco, Shore Lark, and Kirtland's 

 Warbler. Several birds, including the Sparrow Hawks, the larger 

 Buzzards, Blue Jays, and Chickadees were found to be of general 

 distribution. 



On the second day following our arrival, while walking among 

 jack pines on a ridge about three hundred yards from the river, 

 we heard a strange bird song which we traced to a warbler with 

 which we were not familiar. We saw near by two other warblers 

 of the same kind, both of which were singing. At eleven o'clock 

 of the same day we drove from Parmalee's northwest to the north 

 branch of the river, a distance of seven miles. During the first 

 hour of the drive we heard the song at six or eight places along 

 the road, and at last saw one of the warblers on a high, burned 

 stump in a slashing. Mr. Gale shot the bird, which proved to be 

 a breeding male. From this time on we saw no more of the warb- 

 lers, which seemed to be confined to jack pine thickets. After 

 our return, — June 21, — to Ann Arbor, the specimen was identified 

 as Kirtland's Warbler 1 and placed in the University Museum. 



The discovery of this breeding colony of Kirtland's Warbler, 

 added to the fact that among the birds of the locality several north- 

 ern forms had been observed, notably the Arctic Three-toed Wood- 

 pecker, the Junco, the White-throated Sparrow, and the Pine 

 Siskin, made it desirable to study further the bird life of the river 

 valley. Accordingly another trip was taken. 



iBull. Mich. Ornith. Club, Vol. IV, p. 61. 



