Cruzo. July 1916. July 11. Found Slender-billed Ruthatch on dead red fir near cabin. Red-br. Later at foot of Cedar Tree in Rattlesnake Creek Canyon. (Calaveras Marble singing continually in early morning? Juncus building nest in rottilts of small tamarack washed out by winter rains. July 12. Stroked little chipmunk playing possum. Kingfisher fishing near camp in river. Pine Siskins in Rattlesnake Canyon. Heard Sierra Hermit Thrush call. Found another Wood Pewee's nest. Warm. 82°. July 13. Spotted Sandpipers on rivers near camp. Audubons Warbler's nest high in Cottonwood. Both parents feeding. July 14. Walked over to Crystal Lake. Found Mountain Song Sp. on river below bridge. White- Edged headed Woodpecker on large Yellow Pine. Backed down the woods up-Breezy. Many tree sot- 4 youngs nite.