chook is limping, should i go to the vet?

[shelbyschooks]

So this morning I noticed that one of my chickens is limping

. I don't know how bad it is and i've left it for 8 hours while I was at school and I think it's a little better. It doesn't seem to be bothering her too much or slowing her down and I'm not sure how it happened. Do you think I should see a vet or will it get better by itself?