Cogswell 1950 'Journal' 29 July 19 7000 ft. Sugar Bowl Lodge, to lower 'flat' (7400 ft.) in Sugar Bowl near base of Mt. Lincoln, Placer Co., Calif. weather 0355 to 0520 Pacific Standard Time clear, cool. Incomplete record of time of beginning of song of various species of birds heard: (Cogswell and 16 other 'listeners') - (Group B) 0355 - white-crowned Sparrow - began singing in willow thickets some time during last 5 min. 0356 - Traill's Flycatcher } W. Wood Pewee } both in song, forest edge and willow thickets. 0357 - Robin - first song; full chorus within 2 or 3 min. 0401 - Lincoln's Sparrow - 1st heard in distant willows, but may have been singing earlier not distinguished (cf. ) 0409 - Western Tanager - calls heard Observers moved across open slope to neared patch of forest. 0411 - Olive-sided Flycatcher } Oregon Junco } all in song upon Chipping Sparrow } arrival at new post. Observers moved again 0422 - Audubon's Warbler - several already singing in next patch of trees (larger) Green-tailed Towhee - singing from shrubs far up slope. Observers moved on into denser forest 0428 - Hairy Woodpecker - calls heard (bird flew) 0430 - Sapsucker (species ?) - heard drumming. End of record of beginning of singing.