One of North America's most nondescript birds: pale gray above, lighter whitish below, with a hint of pale spectacles and wingbars. Long-tailed for a vireo, but with a typically thick bill. Most similar to drab Bell's Vireo but note habitat and size differences. Also compare with Plumbeous Vireo, which is shorter-tailed and more boldly marked. Distinguished from other gray birds like Bushtit and gnatcatchers by uniform plumage and bill shape.