I got wind of the Black-headed Grosbeak on Saturday when my sister Jennie arrived at my apartment. We headed out to the location and met Jack & Joyce Armstrong there. After 10-15 minutes we had excellent views of the bird in the black walnut (?) tree to the right of the garage of a residence east of Rockford (directions below).
Unfortunately, I failed to get a photo as the bird flew when I attempted to get the camera out.
Directions:
Take Riverside east past the tollway, past Sportscore 2, past Olsen Road. The road curves and descends and then take a left at Aberdeen Rd (looks almost like a private drive). Take an immediate left on Prestwick Rd. I think the address is 11507 and is on the right (driveway leads to a garage that is located at a left, 90-degree angle.)
I believe this was reported on the phone tree but I thought I’d post it here as well.