Thats true about a coyote....it may not deter it. Mychickens too like the rain, but the noise from the sprinkler scares deer away, and the chickens from mygardens. They now wont go near it. I free range my chickens, and so far no problems, and locking them in tight in the coop at night eases my mind, but like you said ya never know you cant watch over them all the time. Thanks for the reply folks.