1911] Swarth: Alaska Expedition of 1909. 93 



On Mitkof Island several broods of young birds were seen 

 along one of the streams. One secured here on August 8 (J' juv. 

 no. 9640) is just beginning to molt the juvenal plumage, a few 

 pin feathers appearing on the throat, breast and crown. At 

 Thomas Bay (August 13 to 23) the species was fairly abundant 

 in the meadows, all that were secured being immatures that had 

 assumed the first winter plumage, few showing even a trace 

 of juvenal feathers. They were also exceedingly abundant at 

 Port Snettisham, feeding in the tall grass at the edge of a dense 

 willow swamp. Along the Taku River they were fairly common, 

 usually at the edge of the meadows, where bordering thickets 

 afforded an abundance of shelter. 



Twenty-four specimens were secured, as follows : San Alberto 

 Bay, Prince of Wales Island, one (no. 9631), Klawak Salt Lake, 

 one (no. 9632), Chickamin River, four (nos. 9633-9636), Portage 

 Cove, Revillagigedo Island, one (no. 9637), Mitkof Island, three 

 juvenals (nos. 9638-9640), Thomas Bay, four immatures (nos. 

 9641-9644), Port Snettisham, five immatures (nos. 9645-9649), 

 Taku River, five immatures (nos. 9650-9654). 



Passerella iliaca insularis Ridgway. Kadiak Fox Sparrow. 



A single fox sparrow taken at Three-mile Arm, Kuiu Island, 

 on April 30, is apparently to be referred to this form. It is a 

 pale colored, large-billed bird, widely different from the breeding 

 bird of the region (P. i. townsendi) . Neither is it to be referred 

 to the breeding bird of the Prince William Sound Region 

 {P. i. sinuosa) from which it differs in browner color and much 

 larger bill. 



This bird (J* ad. no. 9655) was caught in a mouse trap set on 

 a little island in the bay. It was the only fox sparrow that was 

 seen on any of the islands south of Frederick Soimd, no form of 

 Passerella being found breeding at any poiitt. 



Passerella iliaca townsendi (Audubon). 

 Townsend Fox Sparrow. 

 As no fox sparrows weee observed at any of the numerous 

 places visited between Frederick Sound and Dixon Entrance, this 



