I free-range my chickens, ducks and guineas on a 5 acre area with a 8 foot fence and they produce some excellent eggs, 100 times better than store bought, sometimes my guineas will over the fence to graze the pasture and I'll tell my guard dog, Guineas, and she'll put them back in, No ticks or...
I've got quite a few chickens, ducks and guineas and they all eat eggs when I give them eggs and I've been raising them for many years with no problems
My guineas got spooked by an owl awhile back,they were roosting in a big tree next to the chicken house, the next night they were all inside the chicken house roosting.
I've run raccoons with black and tans on mules when I did a lot of coon hunting, I really like the Jack Russell breed for varmits, got one girl that isn't afraid of anything, I can say booger and get goes nuts
I've been around chickens for a long time, been raising chickens for the last couple of yrs full-time, I have approx 75 and 20 guineas and 18 ducks and have worked in the public & private sector with a lot of turkeys!