EL Karlstom 1955 Bufo corone June 8 advantage of ? dichromism ? Disruptive pattern? males are much harder to see with their greenish-brown color, whereas ? are readily spotted. One comes back to sex recognition. ??? June 14 Rock Creek Lake, 9727 ft., Inyo Cr., Calif. Made camp at small shallow lake just below the larger Rock Creek Lake. Mucky area adjacent to lake. No onshore active hole. Water temp. 9:15 10.5°c. Air June 15 1" above water 7.8° c. During the night the wax-wn. thermometer recorded a low of 33° c. At 1 p.m. Drew did find me an active young ? corone from a mucky area adjacent to creek entering Rock Creek Lake from the south. Very little wet ranch available around this lake. I took a Rana muscosa in some area as Drew found the corone. Sunny mild afternoon with scattered high light cumulus. Breeze gusty from SW. Air temp (half shaded) at 1:15 p.m. 17.8° c. Further search of the south end of the lake revealed no further stocks. There is a string of lakes S by SW of Rock Creek Lake and there should be good meadow habitat at the margins of those lakes. Where Drew found the single ? there in heavy willow growth, sedges around the muddy pools. Aspen and pine beside the stream. Even looked to be open and dry. The only snow left is in form of spruce particles age under denser pine stands and north facing slopes. Rock Creek Lake Rock Station, 9000 ft. Extensive pasture meadow lake with many side lakes, simulate a salpige stream. No onshore rear. 2:30 p.m.