My first thought was an Indigo Bunting. But it had reddish brown wings/wing bars through binos. This is pretty far north for a Blue Grosbeak, but there have been several spotted in the greater Chicago area (taken about 40mi north) this year. And a Neotropical Cormorant is currently hangin out at the same preserve and it's way north of its normal range. I looked at a number of photos and it seems to resemble the 1st male juveniles of both. Any thoughts?