Frances A. Prock 141 Pileolated Warbler May 17 Russian Gulch State Park, Mendocino Co., California 1:30 PM. Perched in inner branches red alder tree singing. Breast bright yellow; black crown. Song - 4 slow notes -> 5 or 6 gradually accelerated. Alder on creek edge amid riparian habitat of raspberry bushes, Equisetum, & ferns at the base of a steep hill covered with Douglas fir, lowland fir, and red alders (near base)