I don't have the answer, Phil, but can recommend that for identifying birds, rec.birds newsgroup has been exceedingly helpful for me. They do not accept binary but posting a link to your image almost always gets responses. They often get images that are of poor quality but with your quality and all NPN quality I think they would seldom miss.
Mia is spot on with her assessment. It appears similar to the Saltmarsh Sparrow - but the blackbird has a much longer/pointed bill and of course you would be hardpressed to feed a saltmarsh sparrow in Wisconsin!
Discussion
3 repliesThanks for the help