To whom do I belong?

Imagine my shock and horror on a walk yesterday when we came across a small pair of wings with a teeny carcass in between. The bird's wingspan was about 12". This photo shows a fair bit of one wing - it's not just the tip. It couldn't possibly be one of the rare to uncommon Northern Pygmy-owls that everyone is enjoying at the moment, could it? The last ID conclusion is that this wing belongs to a Gray Partridge - yet these have never been seen in this park before. Something tells me that it's not a Gray Partridge, though. If anyone can solve this mystery for us, it would be so much appreciated, even if you have to gently break sad news to me : (. I know it's all part of Nature, but .....
Note later: it is a Ruffed Grouse wing!