Birds Of Southern California

Pacific-slope Flycatcher (Empidonax difficilis)

The Pacific-slope Flycatcher is a small insectivorous bird of the family Tyrannidae. It is native to coastal regions of western North America, including the Pacific Ocean and the southern Sea of Cortez, as far north as British Columbia and southern Alaska, but is replaced in the inland regions by the Cordilleran Flycatcher. These two species were formerly considered a single species known as Western Flycatcher. In winter, both species migrate south to Mexico, where they are virtually indistinguishable from one another. In plumage, the Pacific-slope Flycatcher is virtually identical to the Cordilleran Flycatcher, and differs only subtly from most Empidonax flycatchers in North America, but its breeding habitat and call are different. Its call can vary slightly by different regions and the bird itself. (Excerpt from Wikipedia)