“One of the more unusual (but still fascinating) exhibitions at Bletchley Park is all about the role pigeons have played in the First and Second World Wars. Aircrews used them as rudimentary black boxes, writing their coordinates on a message and releasing the pigeon if they had to ditch or crash land.
There was also a cull of birds-of-prey all along the south coast during World War Two to ensure the pigeons could get back safely.”
Nye's Grandpa worked at Bletchley Park, something to do with radios and code breaking. He didn't make the movie. Nobody knew he'd worked there until after he'd died. One day his wife was walking down the street and someone stopped her to ask after him. She told her that she had been very fond of him when they had worked together at Bletchley. That was the first anyone in the family knew of it. Grandpa was good at state secrets.