I remember reading somewhere in here last year, no matter how safe your coop and run are, preditors can still find a way in. I didn't mean to be smug, but I thought, nope not mine, they are safe. Well, I did learn no matter how safe, preditors can and will find a way in.
We have a 10x30 covered run with a coop in the run, but on the weekend when we are home we like to let the girls out to enjoy what is left in our fenced garden. It was a mild winter last year so they were able to find some grass and stuff. Anyway,one sunday we let them out to enjoy some sun and mild weather, later in the day my husband and I came outside to clean the coop and give them fresh water and feed. We heard them all upset and in the run, but we couldn't see them at that point. My husband went down to the run to get the watering cans and I went to get the bucket of food for them. I heard my husband calling me and came running. There was a hawk that just up and walked in the run after them. I can only imagine that it was circling over head and the girls ran into the run for safety and the hawk landed and walked right in the coop. Yes, it did get one of my girls, we were heart broken. But lesson learned, no matter how safe your coop, preditors can and will find a way in. The lesson here is: hawks WILL land and walk in a coop or run if the chickens are inside.
For the longest time, I didn't even want to let them back out in the garden, but we decided, to keep them cooped up would be worse than a hawk attack. We keep our ears in tune to them and our eyes watchful now when they are in the garden.
That is my experience and I hope it will avoid the loss of one of your girls.