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Uploaded on May 23, 2011
A Brewster's Warbler is a hybrid between a Blue-winged and a Golden-winged warbler. This one has the song of a Blue-winged warbler. Filmed at Oil Creek State Park in Western Pennsylvania on May 20, 2011, using a Panasonic GH2 with a 100-300mm lens in Extra Tele-conversion mode (300 x 2 x 2.6 = 1560mm equivalent). Other birds heard are Chestnut-sided warbler, Catbird, and the drumming of Ruffed Grouse. A custom, external, stereo microphone was used. Lighting conditions were cloudy and within two hours of sunset.