Jackies limping

If the temp of the leg is the same and it is not swollen then it's likely to be a sprain rather than a break. Not much you can do but just make sure she she has easy access into her coup and her perch (if she roosts that it). Have you checked under her foot as well?

sounds like it's nothing serious then 

We had a dog that used to limp, but every now and then he used to forget which leg it was and look all pathetic holding up a different one 

How is she this morning? Hopefully running around being a little terror for you   

Two weeks ago one of our two Blackrocks (Rocket) was caught by a dog and escaped minus a few feathers and with some damage to one leg. No punctures or breaks, but she held it up and back so every night I brought her into the house to be warm and have a straw bed. She started to wait for me to pick her up to be brought in. This was working and she was gradually putting more and more weight on it. Last night I returned home later than expected and found all asleep except one Blackrock, so I grabbed her, closed all and took her into her bedroom and went to bed myself. This morning I found that I'd grabbed the wrong bird! Ah well, all can now perch together tonight.