Remsen, J.V. 1973 MacGillivray's Warbler Oporornis tolmier July 14 Camp Squalding, Nevada Co., Calif.: 2 Aug. 31 Sacramento R., Yolo Co., Calif.: 2 Sep.-7 Mono Lake, Mono Co., Calif.: 3 White Wolf Camp, Yosemite NP, Tuolumne Co., Calif.: 1 Crane Flat meadows, Yosemite NP, Mariposa Co., Calif.: 5 Sep.8 Crane Flat meadows: 1 h.a. Bridgveil Camp, Yosemite NP, Mariposa Co., Calif.: 1. All the chip notes of this species heard this week were softer than those I associate with breeding MacGillivray's - Dick Erickson also noticed this independently. 373 Gravatt Dr., Oakland, Alameda Co., Calif.: 1 Sep.9 373 Gravatt: 1 Sep.10 Jewel Lake, Tilden Pail, Contra Costa Co., Calif.: 2 373 Gravatt: 1 h.a. Sep.11 373 Gravatt: 1 h.a. Sep.13 Tollhouse Springs, Westguard Pass, Inyo Co., Calif.: 2 Deep Springs Ranch, San Diego Co., Calif.: 2 Scotty's Castle, Death Valley, Inyo Co.: 2 Sep.14 Morongo Valley, San Bernardino Co., Calif.: 5 Sep.27 Pescadero Marsh, San Mateo Co., Calif.: 1 h.a. - seen by Kim Garrett