Not even Red-shouldered Hawk ever has that bright a red on its wings. I suspect this is a Red-shouldered Hawk, but that the red here is actually a wing tag (put on by a researcher to track its migration, etc.), not part of the plumage.
PS. Found this on the IL bird forum. So perhaps a 2012 tagged bird.
USDA APHIS Wildlife Services (WS) and the National Wildlife Research Center have started a mark/re-sighting study on red-tailed hawks as part of the ongoing efforts to find non-lethal solutions to wildlife issues at airports.
For the mark/re-sighting study, we are marking roughly 200 birds/year for the next three years and relocating them 50, 75, 100, and 125 miles due west of a major airport in the Chicago region. This year the tags are green with white numbers ranging from 000 to 200. Next year (2011) they will be white with black numbers 000 to 200, and the following year (2012) orange with black numbers 000 to 200. We want to see if there is a difference in the return rates of the birds back to the airport, depending on how far away from the airport we move them. These birds will also be fitted with a metal USGS leg band.
If anyone observes these birds, please feel free to contact Craig Pullins (firstname.lastname@example.org) at (773) 686-6742 or Travis Guerrant (email@example.com) at (773) 686-6955. If possible, time, date and GPS location would be greatly appreciated, but any information you can provide would be helpful.
Wildlife Biologist, IL Wildlife Services