Because it makes for a better story.
Used to go to the Bahamas every year and there was always a barracuda we tried to catch but could never get a bite. We said it was the same one every year because he was in the same area and locations but the truth of the matter is it was a very good spot for a Cuda and there probably were several in the area. When we finally caught him we said we have been chasing him for 5 years, but chances are this was a brand new one.
Barring unique physical features, which are rare on Turkeys imo, there really is no way to tell. They have legs, they have wings, they move.