Raised and released here by local landowners for shooting purposes along with Red-legged Partridge.

Sorry Steve, I don't understand your post. Where is "here" - is it on the Levels, which is the area I said I find it difficult to see Grey Partridge? Certainly "here" is not where I reported the birds from, as the 2 landowners in Greinton where I see the birds don't allow any game shooting on their land

I've seen them several times since I started using that road two or three years ago, i.e. not just recently. Must be a local hot spot for them.