Blood Freak (1972)
Chunky Elvis impersonator turns into a mutant turkey. No. Really.
Streaming on Amazon Prime for the morbidly curious.
It's truly a sight to see...
The Director,Brad Grinter, makes frequent appearances during the film to recap scenes and offer 'insight'....and he has a huge coughing fit at the end of the film and no they didn't reshoot the scene.
That's the actual end of the film...
This film may also be the world's only Christian, Anti-Drug, Turkey-Vampire movie ever made.