Remsen, J.V. 1974 Red-eyed Vireo Vireo olivaceus June 26 301 Camino Pablo, Orinda, Contra Costa Co, Calif : 0900 - I was eating my breakfast on the front porch when I heard in the distance what I immediately was sure was a Red-eyed Vireo song coming from San Pablo Creek about 400-500 yds east across the Wagner-Ranch School grounds. Although between the busy street traffic and the children playing in the school yard it was extremely difficult to hear clearly, I was still certain of the identification. I rushed inside to get my binoculars and walked rapidly toward the source of the song. As I approached the riparian, the bird flew farther into the thickets, sang a few times, and then stopped. Then I heard it singing again a minute later 200 yds north upswea do. This time I saw the bird sitting about 30' up in a dead branch, singing away. Although I hadn't heard the song for 7-8 years, it still sounded very familiar with one new twist - about once every minute or so it would substitute a beautiful imitation of the entire "quick- three-beers" Olive-sided Flycatcher song for one of its one double notes. The song in general is much faster, sweeter, richer, and generally more melodious than a Solitary Vireo. I'm not familiar with Yellow-throated or Philadelphia song, but it was deeper and richer than Yellow-greens I'd heard in the Amazon. Although I could still hear the bird once I returned home to phone people, no one could locate it later that morning. My view of the bird did not allow me to see the eye-color, but the bluish crown, very distinct eye line and completely white underparts were seen. The bird was obviously larger than Warbling in body size and especially bill size.