I let my chickens free range in the day time and they get caged up at night. I was out on Monday with my chickens and wasn't in the house 20 minutes and looked outside and saw one of my girls laying on ground in back yard dead and the hawk sitting in the tree waiting to come down and finish eating her. My chickens want to range so bad, but I'm afraid to let them out. My sister-in-law watched a crow come down and stab her chicken in the neck, I didn't think crows killed chickens.
Are you using the term chicken when you should be saying chick? Chicks have a lot more predator issues, especially when they would otherwise be under protection of a hen.