I have started noticing a bunch of feather loss on all but one of my hens. We just recently started getting 4 eggs a day and we have 5 hens total. We also got a dog about a month ago (same-ish time the eggs started and the feather loss began). He is inside most of the time but when he is outside he usually spends a good 5 minutes or more terrorizing the outside of their run in spite of my efforts to keep him at bay. This is our first year with them and I don't know if this is molting or if I should be combating something else. They do have areas to dust bathe and are free ranged in the back yard almost every day. The feather loss seems to be happening in the same area on each of them. Any help would be appreciated. Thanks!