He wasn't the easiest subject to photograph as he flitted around catching insects, but I managed to obtain a few. It seemed just as I was in a good position, my resident Song Sparrows would fly in and chase
him to the other side of the tree, where undaunted, he just continued to feed.
He had a sweet little song, quite similar the the Yellow-rumps that have been hanging around for the last couple of days, but with a different ending.
According to Kenn Kaufman's Lives of North American Birds, the Wilson's nests from coast to coast across Canada, but is far more common farther west. In the east, it is seen in small numbers. So I feel honored to have welcomed this spritely little warbler to my home.

