AC&C had been alerted to the accident by a neighbor who saw it happen from her apartment across the backyard. It was a freezing cold day and time was critical: in a scene straight from Rear Window, the neighbor had to direct AC&C to the right apartment by counting the balconies she could see from her window.
It was not clear whether AC&C would find an injured Merlin, or a dead one. The Merlin (Falco columbarius) is a small pigeon-sized falcon that hunts songbirds at incredible speeds: they have been clocked reaching 30 mph, and at that speed, a collision with a window would break its neck.
At the Wild Bird Fund Rehabilitation Center, the Merlin was given fluids and a dark room to rest in. Birds that survive a window strike might simply be stunned, and are able to fly away after some rest, but in cold weather, hypothermia could set in before they have the chance to recover. That's exactly what would have happened to the Merlin had he not been rescued.