2 The Wilson Bulletin — Xo. 78. 



A field party of the South Dakota State Survey spent from 

 July 22nd to August 8th, 1911, in this county. We entered 

 along the Cheyenne River from the northeast. The wagon 

 passed through Hot Springs, Alinnekahta, and Edgemont, 

 and then proceeded to the extreme southwestern corner. 

 From there it swung east along Indian Creek to Ardmore, 

 north .along Hat Creek almost to the Cheyenne River, thence 

 east to Oelrichs and southeast into the Pine Ridge Reserva- 

 tion. By means of the saddle horses most of the county was 

 visited. The following list of seventy-six species of birds 

 were observed. It probably includes the commoner summer 

 birds of the area. Forty odd species were collected for the 

 state museum : 



The List. 



Hydrochelidon nigra surmameusis. Black Tern.- — Seen migrat- 

 ing along Hat Creek August 2nd. 



Querquedula discors. Blue-winged Teal. — An abundant migrant 

 and a rare breeded. Broods seen in several parts of the county ; 

 southwest . of Edgemont, July 28th; Indian Creek, July 31st; and 

 west of Oelrichs August 3rd, 



Daflla acuta. Pintail. — A brood was seen along Indian Creek 

 July 31st. ^Said to be abundant during migrations. 



Erismatnra iammcensis. Ruddy Duck. — Several were seen on 

 a pond near Ardmore, August 1st. 



Nycticorax iia't>iiis. Black-crowned Night Heron. — Seen several 

 times, along the larger creeks. Indian, Hat. and Horsehead. 



Totanns flai-ipes. Yellow-legs. Noted July 23rd, 27th. 30th. Au- 

 gust 2nd and 6th, at rather widely separated localities. 



Helodromas s. solitarius. Solitary Sandpiper. — An abundant mi- 

 grant. 



Bart ram ia lonf/icaiida. T^pland Plovor. — A tolerably common 

 summer resident, at least we saw it regularly. Young unable to 

 fly were seen. 



Actitis macularia. Spotted Sandpiper. — Common during our stay, 

 especially along the streams in the Black hills. 



Oxyechvs vociferus. Killdeer. — A very abundant summer resi- 

 dent. By far the most numerous water bird. A brood was raised 

 near almost every body of water in the county. 



Pedicecetes c. campestris. Prairie Sharp-tailed (i rouse. — This 

 grouse was found to be quite numerous in the park-like forest of 

 the foothills, and fairly plentiful along the flood plains of the 

 creeks on the plains. 



