Location in Oregon
Blue is Winter range - Red is Summer range
Purple is Year-round range - Yellow is Migration range

Black-throated Gray Warbler

Dendroica caerulescens - Common in dry western deciduous or coniferous scrub. The combination of dark cheek patches and very faintly streaked back distinguishes it in all plumages. The tiny yellow facial spot is hard to see, but diagnostic. Song is of slightly wheezy notes.