Same as JaciJones,
It is mostly the fox, and pet dogs around here in South Wales.
There are some polecats around but not too many, we also have a lot of hawks and owls, there is a local guy who keeps them around here. But plenty hunt along the motorway too and we are quite close.
We also have a real issue with Magpies and Jackdaws here, they would not bother my chickens, in fact they sit in the trees apparently transfixed but they kill a lot of the garden birds, then something kills them, I have found 2 dead magpies in my garden this winter.
I would not trust them with young chicks in the garden, or smaller birds.
WE have a black fox around here he is often seen at night crossing roads, and several people have lost chickens and rabbits to him.
The blackbirds have become very friendly in my back garden, and I now have a routine wih one, as I open the run door to feed the chickens in the morning she comes onto the roof and waits for her bread and seeds. I often look out and see her and the girls having a chat through the wire. lol. Very afraid I will step on her one day, she is always around.
The Robin flies into the coup and the run and leaves before the girls realise he is around. Bold little chap...lol.
The Blackbirds kick up a lot of noise if anything is around here they don't like, so they tend to raise the alarm even if it is a dog or cat is wandering.
When I read posts on here about predators I think we are so lucky.
Most important I keep an eye on my Dog!!!! lol... love him but would not trust him too much.
Jena.