Raccoons are minor concern for me while they hit flocks belonging to neighbors very hard. Two systems used here although using one would still give good protection. Before getting into systems, I make so chickens roost up in locations raccoon can not reach. Additionally traps out much of time...
I am seeing something related with feather loss that is not typical. Birds may have already molted. A couple of free-range hens appear to have gotten sick roughly 2 weeks ago, causing one to abort incubation cycle. Both hens were decidely lethargic for about one week before feathers were lost...