Surprise encounter

We came across a swift on our way into town; flat on its back on the pavement. We picked it up, checked in at the vets who found no visible injuries and headed off to the Mere to see if we could get the little guy/gal back in the air again, but to no avail. She/he was too sleepy/concussed, so maybe suffering from an injury we couldn't see. We left him/her as best we could (upright, shaded, high up) and will hope for the best...