Wild turkeys, provided they arent injured, fly very well. A dropped wild turkey would parachute down to a tree or roof peak.
A juvenile domestic turkey, if its one of the heritage breeds close to wild ones, can sometimes do sort of a wing assisted jump up into a tree or fence top.
A full grown adult domestic turkey cant fly. Not a little, not even more than a hop that just gets all their toes up simultaneously.
Assuming Les is dropping fully grown domestic turkeys they would tumble and flap but still hit the pavement like wet bags of cement. Not strong enough, no longer aerodynamic, wings too small for that weight. Splat.
Crazy But True: The Real Life Inspiration for WKRP's "Turkeys Away"
The part actually related to the turkeys is brief and starts at 6 minutes.
The gist of it is that the idea came to the writer because he had been working at a Dallas radio station in the 60s when the manager had employees throw domestic turkeys out of the back of a moving pickup truck. By the way the story is told it seems that they had to backtrack saying the employees shouldnt have thrown them and asked everyone to give them back for $5 as they were supposed to go to an orphanage.
Turns out that there IS a turkey drop in Yellville, Arkansas. They have been dropping wild turkeys from a plane 500 feet up since the '40s. "Most of them" are "normally fine unless they hit a power line" because they just "land on a roof."
Now that Ive been reminded of this, I seem to remember a very old thread around here about the Yellville drop. If you can find it that one might be pretty funny with all the old timers.