Barbed wire and foxes

[claudicles]

I've read a few of the fox protection threads but I can't find an answer ot my question. I probably just haven't looked hard enough but I'll ask anyway.

I am planning on fencing a run for my chickens just for when I am home. They have a roofed run for when I am not but I don't want them to free range as I am on 2.5 acres with a large garden which I would like to stay planted. I've read a lot about ground level fox proofing but not top of fence stuff. If I have a four foot fence will a couple of layer of barbed wire be any deterrant for foxes? Fortunately I don't have to worry about other predators where I am (Sydney, Australia)

Thanks in advance.

 

[twentynine]

I don't believe it would be very much deterrant.

 

[7L Farm]

Get yourself a havahart trap.I caught this foxs using peanut butter.

 

[claudicles]

This might sound pretty silly but what do you do with them once you have caught them?