I am not an OT but since this spring I have not lost any to outside predators. 1st, I have a large dog that lives free on the farm. While not an LGD, she doesn't bother the chickens and has actually helped me herd hogs. Of course only when she wants to. Last night, she was barking on the perimeter of our 4 acres. 3 sides of it actually. Don't know if it was a deer, coon, or what, but she wasn't happy. My neighbor has been complaining about coyotes, and a few miles away, where the woods hits another road, there have been severe losses. She is our first line of defense backed by 3 other dogs, being a German Shepherd, a Boxer/Pyrenees mix, and an English Mastiff. Way I look at it, if she get's into it with something, the other 3 are set free and whatever it is will rue the day.
My flock is in a 75 foot barn that stays open, they free range, and the coop/stall doors rarely close. They share it with the feeder pigs. The side of the barn that is 50 yards away from the pond used to be brush laden but the pigs cleared it and coupled with the electric wire, have kept the coon and possum away. I also run a light shining out of the barn to the woods at night and there is a mercury vapor light and the beagle kennel at the other end.
I have a .22 loaded and a 12ga. loaded after this spring. Carla wanted none of that earlier in the year but after a summer working with the boys about guns and gun safety, she has relented about the loaded part.... sort of... I think she just let's me get my way....
Bottom line is, I expect to lose some because I let them free range. The hogs have stepped on a few and killed them while arguing over feed trough space. I have enough birds that some loss is acceptable, and I have not lost near what I did when I had them penned. That all said, mine are layers, I incubate, only 1 has a name... unlike Bee and her gnarly bunch...BTW Jules, I have some monogrammed diapers for them cheap if you would like

.... I kid, I kid.....
My meat birds are in a 40x 40 Premeir electro netting and has kept them completely safe.
We have probably 10 barn cats that ignore them as well as all the dogs, beagles included.
My chickens, and I have a big mouth and have been known to be free of hand if a pup grabs a chicken, though I prefer the collar for lessons.
Now, baby rabbits... Can't protect them, but I don't feed them either.