Smelled rather than saw at around 1130PM GMT-9. Was out at night walking, was not inclined to try to find it and get a photo!
Black head, red long break, brown body.
Several along the trail from Rancheria Falls.
Along trail from Rancheria Falls to Hetch Hetchy. Photos by Sebastian Conrady, also on trip (hand in photo is mine)
One of two animals observed by Lake Vernon in Yosemite. Two males apparently fighting over territory.
Unable to snap photo. On UCB campus. Verified by two others.
Keyed using description and range maps, relying primarily on beak shape and lack of observed shading during brief head-pop.
Cameraphone photo -- on the natural bridge, observed by binocular.