We have always removed the heads. I saw the plucker video on u-tube and saw the heads on chickens as they ran through the plucker. did't know they did it that way. Grandma always removed the heads, then let the chickens on the ground and headless chickens would run in circles ,Jump up and down and chase us or so we thought. If we had just quit running in circles and took off straight, we wouldn't have been chased so badly...silly kids, running and screaming. My dad would "ring their Necks" He would give them a twirl over his head and a snap, and off would go their head, again chickens running around the yard. I screamed a lot back then, I am not that way now. and it didn't scar me for life, although for awhile there I dreamed about these chickens chasing me..I am not sure how hubby does it. I just help pluck/ I let him do the dirty work..