W.C. Russell Yellowstone Park, 3 mi. W Gardiner, 5400 ft., Mont. Aug 17, 1967 page. They are even scattered in Aspens and Doug Fir. Aug 18 1967 Stayed along the aspen bird drew above the pond. Young birds of all kinds are all over the place. Young especially noticable of Robin Red-Breasted Sapsucker Tolmie Warbler Vesper Sparrow Chipping Sparrow Red-wing Blackbird Marbling Vireo Fleisher Nutsackers There is a patch of sedge on one side of pond. Found trails & cut stems so put out 36 mouse traps in this stuff and 27 through the dry open rocky slopes with scattered sage & other low desert shrubs. The Empidonax #14344 was taken from a low aspen where it was quietly sitting. No a sound out of it!