I’m not sure what would distinguish it as a chicken vs a turkey. The size seems like that would have been one hell of a giant chicken, or a small turkey. I would still say it is a turkey but I don’t know if there’s some sort of identifier between the two once they’re cooked and on the plate. I’d have to give it a taste.
It seem to be AI generated but looking from the wing angle it looks like a chicken , I've never seem a small full decapitated turkey before but could be the one (turkey)though..