May 18. 2 M. E. Hagerman, Gooding Co., Idaho. Collected top-line in morning & had but 3 Chromyus maniculatus; 2 yrs. & 1 went. Saved. We skinned all morning including a marmot & then Howard & I went for a hike north into some small talus slopes forming a slight terrace which closes in the adjacent marsh. The marshes contained some of the following birds: Stilt, yellow-headed (Bld.) King (one nest + egg), Wilson (Phalopops) Cinnamon Teal (one yrs. found & photo'd). Our purpose was to bring home a large marmot, so a good part of the time was spent watching talus slopes. Coming out of a talus slope gushed almost a river of clear cold water. I shot one off a ledge which overhung the stream. I finally had to dive to the bottom of the icy water & snare the thing. In this case I don't believe! the presence of water had anything to do with the marmots being there (only in directly). Many other places along the stream superficially looked like a perfect "duck" habitat; there were deep crannies & protecting sage. On the unhabited cliffs there were crannies, sage plus what I think is very important thing not present in the uninhabited areas.