Great shot of a beautiful bird. Sometimes you have to take them where you can.
This bird is way out of it's normal range. Often they will hang around for a while. You should report it to your local 'Rare Bird Alert' or the local Audubon Society. There are probably a lot of birders in your area who would like to see it.
I don't like to take photos of birds on a feeder, but this Summer Tanager is an exception. Chicago seems to be out of their migration range, and I'm still 20 miles north of the city. Hopefully he will be here awhile.