lemon yellow bird with white wings (1 Viewer)

Yesterday at my feeder in Pine City,MN eating the grape jelly was a bird with no black marking clear lemon yellow head ,body, and tail with white wings the shape of the bird's beak,head,tail and body was like a warbler but no black marking anywhere. The orioles were not happy to share, this bird was sightly smaller and thinner. a immature warbler ? any ideas what I saw.