I've not seen a rat or tunnels or pathways. BUT: something stole about 1/3 of my turkey eggs, a minumum of a chicken egg a day-sometimes up to 3 eggs a day (for the past month or more). Got into my brooder & took away 4 turkey poulets & killed & left behind 2 turkey poulets, 2 polish chicks & 1 6wk old Silky. Dug under & into my Silky coop, took & killed 2 1wk old baby Silkies. None of the adult chickens/turky have been bothered. Everything but rats have been eliminated as the predator.
I've just read all the posts and am still not sure what to try. I've used Live traps on Coons & 'Possums with good success. 22 rifle helps keep the foxes away. Don't know what to do about a predator I can't see. We have a large chicken house and nearly as large turkey house & a small Silky coop. A portion of a shed was made into a brooder.
We have a dog, a neighbors cat - wouldn't want to injure any of them (positive they are not the problem). I'm looking at the TomCat Mouse poisen, but since I don't know where the rats are or their runs or holes, I don't know where to put the poisen so at it doesn't get eaten by my chickens & turkey's.
I do lock all the fowls up at night.
Suggestions?