To prevent further attacks have gotten 4 Predator Guard units, these have two red LEDs instead of one like the Night Guard has. Also have an AM radio set to talk radio to provide human voices at night.
In one of my posts about Squawk, she escaped the red tail hawk then this past February I lost her to a coyote, we haven't had coyotes around the neighborhood in 3-4 years. I let the chickens out for awhile free range, a couple hours latter the four remaining hens came to the backdoor clucking...
For two years I free ranged the four hens until the third year when one hen almost got snatched up by a large red tail. After that, the chickens realized they need to watch out for hawks besides foraging for bugs. I have been letting the hens out with supervision and the hawks so far have not...