W.B. Davis 1935. 2 mi. E. / Lagerman, Gooding Co., Idaho. May 19, 5 males have territories along a creek within a 200 yard length. The males are calling continuously, even up to 11:30 at night. They have a very peculiar method of flight from the top of one willow to another, fluttering their wings and flopping their tails up and down as if they were loose appendages and often calling when in flight. Perhaps this is part of their mating antics. Stayed in camp most of the day putting up Marmots and Pocket Gophers. May 20. Same locality. Visited my gopher sets + about 5 more traps I had placed in runways in a combination of dead last year's grass plus this year's new growth, on the south side of the river. I took two big breeding males and two small apparently young females. I discarded the young ones. In the mouse traps I had two & Mus musculus and a very light bluish colored Peromyscus. A man watering the fields killed a Microtus, called a "mole" by him and claimed to be the cause of much trouble in