After 35 years raising chickens around every predator immaginable, I agree: it is a chicken owner's responsibility to imagine every way possible a predator can get the chicken, and then prevent that from happening by having the most secure hen house and yard possible.
In our neck of the woods a predator could be a weasel, badger, racoon, skunk, accipiter, or most likely, a neighborhood dog. Most will kill more than they can eat. I've had raccoons climb up 10 feet to chickens roosting in the rafters our barn, badgers pull chicks through 2x4 inch wire, weasels bite the bare spot under the wing and drink the blood like little vampires, skunks demolish a whole flock of half-grown pullets by beheading them in one evening, etc. Prevention is the name of the game.
