No other vireo combines white wing bars, yellow throat and yellow spectacles. Juvenile White-eyed Vireo is similar but does not have a yellow throat. Pine Warbler has similar plumage, but lacks spectacles, and has a thinner bill, faintly streaked sides, and white tail spots.
Length and wingspan from: Robbins, C.S., Bruun, B., Zim, H.S., (1966). Birds of North America. New York: Western Publishing Company, Inc.