I lost a sweet gal yesterday. The first one I've lost, and I'm devastated. I'm sorry this happened Doodledo. It is bound to happen, even when we do our best to safe-guard them.
Even though I was outside most of the day yesterday, I never heard or saw a thing and didn't know she was gone until the roost count last night. This afternoon, my daughter came running in from outside after seeing a hawk fly over the large open area of our yard where the hens were free ranging. So we got them all inside the coop (boy that took a LOT less time to type than to actually do!), and despite yummy fruit goodies, they were disgruntled then for the rest of the evening.
I'll get the temporary run set up tomorrow and keep them in there for a few days. We use a huge screen tent for a run and put 2x4s ontop of the bottom edges all the way around. It works REALLY well, and it was only $35.