I was home for lunch yesterday and heard my chickens making a huge amount of noise. I ran downstairs to the pen, and there was a very large hawk attempting to snack on my chickens. As soon as I entered the pen, it flew out of the same small hole it entered the pen from. It seems that the snow had shifted the netting and wire that I had protecting the chickens, and a small space was present between the wire and the top of the pen. Anyway, one chicken is now comb-less, one chicken is missing some feathers, and one chicken has a small bite on the comb. All chickens are fine though, and managed to lay eggs yesterday, but were not that excited about coming out of their coops the rest of the day. This morning, the chickens are back to their regular selfs and the wounds are already healing. The pen is now secure and I will be watching for any possible entry point for hawks, eagles, owls, and other birds.