1^11] Swarth: Alaska Expedition of 1909. 51 



them (nos. 9811, 9812) in worn summer plumage, with but a 

 few new feathers appearing on the dorsum, the other (no. 9810) 

 in fresh, winter phimage throughout. The only other occasion 

 on which the species was noted was on September 26, when 

 Hasselborg shot one, of several seen, on some grassy meadows 

 on the Taku river. This bird (no. 9813) has also completed the 

 molt into the winter plumage. 



Pisobia bairdi (Coues). Baird Sandpiper. 



Observed only at Thomas Bay. The first, a single bird, 

 was seen on August 15, and they increased in numbers daily 

 until we left, on August 23. Usually one or two Baird sand- 

 pipers would be seen in a large flock of P. miniitiUa, where their 

 larger size made them conspicuous. Their call-note also was 

 somewhat different, enough so to render them easily distinguish- 

 able. They were at all times wary and unapproachable, usually 

 taking flight when still far beyond gunshot, though the least 

 sandpipers with which they were associated were indifferent to 

 approach. The six specimens secured (nos. 9814-9819) are all 

 in freshly acquired winter plumage. Some are obviously imma- 

 ture, as was evident from the skull, but none were with certainty 

 adult. There are no color differences apparent between the 

 individuals composing the series. 



Pisobia minutilla (Vieillot). Least Sandpiper. 



During the first three weeks in ]\Iay, small flocks were seen 

 at every point visited. The first arrival was noted at Three-mile 

 Arm, Kuiu Island, on ]\Iay 1, and several small flocks were subse- 

 quently seen at the same place. Flocks were observed on Prince 

 of Wales Island at Port Protection (May 6-10), and at Calder 

 Bay (May 12), as also on Coronation Island (May 14-18), and 

 Warren Island (May 19, 20). The species was then lost sight 

 of until July 21, when a single bird was secured at Bradfield 

 Canal. At Zarembo Island, July 27 to August 1, least sand- 

 pipers were exceedingly abundant on the tide flats, where they 

 were gathered in flocks of hundreds, and the same was true at 

 Thomas Bay, August 13-23, the last place where they were 

 observed. 



