Marshall, 1948 56 / 32 Melospiza 146 Walnut Creek see Concord Quadrangle same scale Riparian area surveyed Hill S. Ramon C. Hills April 11 Walnut Creek, Contra Costa Co., Calif. 11:20-12:45 PM Clear, calm, sunny, warm. Veg. along stream: Box elder, Buckeye, Salix, Holodiscus, Populus, some A Scirpus, a Typha, Cornus. Rulrus, Rosa, Rhnus diversifola. Plenty of fresh running water at this season. Kingfishers and Black Phoebe's present. Beginning at lower arrow, walked along stream to upper arrows 11:20 - 12:15'. 1st pair in Salix surrounded by Cornus, 1 little patch S. californicus by a large pool. Good start, response of ? torquata's song. ? circled me, singing from various perches. ? would squawk when he or I finished singing. She was down in the Cornus. Another ? singing in patch scrub sallow where stream valley narrowed. (Possible 3rd pair in patch buckeye & elder - twittered at when I sang.) ? singing at last bridge dense clumps Salix, Rosa, perched high.