I just went out to give our birds (7 ducks & 8 chickens) a treat. I first noticed one of our 9 month old Black Jersey Giants was around but not eating. Then I noticed she was holding 1 eye closed. It looks like the edges of the eye lid are slightly swollen. There have been no changes in food and were moved to their new coop about 1-2 months ago. The only big change is the temperature has dropped and we have gale force winds. I am not sure what to do. Any advice is appreciated. Here are some pictures.