A red-tailed hawk that had been saved by a quick-thinking Metro-North locomotive engineer and pair of MTA police officers has been released back into the wild.  The hawk was released Thursday at Brinckerhoff Nature Preserve in Redding.  The Metro North engineer was operating a Danbury Branch train full of passengers on May 11th when he spotted a large bird on the tracks.  He slowed the train to a stop within a foot of the animal.  MTA Police then responded to remove the juvenile hawk, which was transferred to Stamford Animal Control.  The hawk was then taken to South Wilton Veterinary Group for x-rays that revealed a fracture in the ulna of the hawk’s left wing. Doctors believed surgery would not be required and that the fracture would heal naturally. The hawk was then transferred to Christine’s Critters in Weston, to begin its rehabilitation.  The hawk spent the past five months at Christine’s Critters healing and maturing.