The adult red shoulder with the possible pelvic fracture and potential internal injuries did, in fact, apparently have internal injuries, which he succumbed to Sunday night.
Good news on the juvie red shoulder front, though—we’ve located a falconer who’s excited as all get-out at the prospect of working with him, so in a few weeks he’ll be transferred to said falconer. A couple of years with her will ensure he’s a well-trained hunter and drastically improve his survival chances upon release. For reference, 50% of red shoulder hawks don’t survive their first year in the wild, so delaying his release by placing him as a falconry bird for a couple of years will definitely be in his best interest.