Orr 1932 Wisconsin Creek, 7000 ft., Nye Co., Nev. June 3, 1932 Just over the top of the ridge on the south side of the canyon. This is the south facing slope of the ridge, getting most sun light. Mount Mahogany & Piignus are fairly thick at this point. The Slope is not very great and the open areas are covered with sage. ♂ 477 Zapus princeps - 234-143-32-14 wt. 26g. ♀ 478 " " - 230-136-32-13 wt. 26.5g Captured a bat which was flying about stone house at 8:15 p.m. June 4, 1932 ♀ 479 Myotis - 80-41-8-10.5 Clear this a.m. & cloudy & showery in the afternoon. Went up canyon along creek to trail over ridge. Followed ridge for 1 1/2 mi. up to 9000 feet then went down to adjacent canyon where south fork of Wisconsin Creek flows. The route altogether led three Birches along N creek up into Piignus Pine & Mountain Mahogany clear to snow drifts on other creek where willow, aspen, and Cottonwood were just beginning to get their leaves. Along the Birch area, where Cottonwood, willow, and wild cherry are also growing Audubon Warblers, Virginia Warblers, Solmied Warblers, Pilesolated Warblers, Warbling Vireos, Spotted Towhee, Green-tailed Towhees and Broad-tailed Henningbirds were conspicuous. Up in the Piignus & Mountain Mahogany Western Tanagers, Rock Vrens, Chickadees, Black-throated