Marshall, (1946 Melospiza melodia April 6 Wildeat Canyon, Contra Costa Co., Calif. Spent whole morning with 113 class cloudy, cold. Interesting habitat preference of Song Sparrows! Found in 3 types: (1) Extensive willow bottoms in wide open valley floors & along narrow lines of willows along streams in grassy hill areas. In this habitat - although very extensive in bottom of canyon - song sparrows few & widely spaced. Many patches of willow & brush tangles at stream mouths where none or only 1 singing. (2) Especially widely spaced singing males along narrow line of willows then grassland. Few singing, (3) stream bottoms than oak canyons. Song sparrows in poison oak & other thickets along streams - few and widely spaced pairs - few sing or sing for long time. (3) Extensive patch of wild parsley along broad top of ridge - surrounded by grassland. In this parsley, song sparrows abundant, all males singing - a pair every 25-30 yards. Forage in dense young parsley, get on dead tall stalks to sing. Many or contig., Comparable abundance terr. Therefore much more singing... to tule marsh; single plant association