Oh - Sit rep... The good news is that it was only 1 chicken. one of my older leghorns. poor girl

she was one of my first chickens on the new farm.
I found the remains of the hen under the edge of a pine tree. The neck is mostly eaten away with the head dangling from just a little skin. I have a photo to share if that will help but its gruesome so i wont unless I must.
My wife said when she pulled into the driveway this afternoon a large dark colored bird flew away from that area and that is when she noticed the feathers. She was thinking a hawk because of the coloring. She said no white head or tail, that she noticed aka not a bald eagle. The only thing she said was unique was it seemed really big for a hawk.
She said I "Need to get online and talk to my chicken friends" to see if you guys know what we are dealing with and if we need to keep the girls locked up for a day or two to keep them safe. I have heard someone on here talk about a kind of hawk setting up shop for the winter and i want to make sure that isnt a problem we have.
Can you help me??? this is our first predator kill so we are pretty bummed.