Though I thought our duck pen was perfectly set and sound we went out to find a Mink on the back of one of Pekin Ducks. Thankfully my husband was there in time and pulled it off of our duck (ironically named Lucky) in time so that she was not hurt. Of all predators, a mink never came to mind. Now I'm on the look out for for these sneaks. The pen is completely covered in chicken wire on all sides. The mink went under the snow so we can't see where it got in. Since there was a LOT of running around inside the pen we can't find the spot where it got in. It's going to be a long winter. We've got a lot of snow on the ground and it's hard to shore up the pen anymore until the Spring. Do Minks typically live / hunt in packs? I've never seen one in the area before.