Those birds are creepy.
They began with a taxidermically prepared female turkey model and a pen of active males. In order to learn what specifically gets a turkey visually interested in making more turkeys, the two men slowly removed parts of the turkey model, one by one. They detached the feet, the wings, and eventually the entire body of the taxidermied turkey until the stick-mounted head and neck, held like the grimmest puppet, remained.
In their paper “Stimulae Eliciting Sexual Behavior” the scientists write: “Male turkeys presented a body without the head displayed but did not mount. Presenting the head alone (upright) released display behavior followed by ‘mounting’ and copulatory movements immediately posterior to the head.”
That’s a bit of evidence that bozo defending the missionary position didn’t consider. See? Turkey faces are a potent visual stimulus to other turkeys, even when decapitated and impaled on a stick.
I don’t understand how non-vegetarians can even bear to eat those things.