Sounds like you have Great Horned Owls.
I have a pair of Great Horned Owls nesting nearby & they've been there for years. Great Horned Owls are pretty fierce birds and have been known to take full grown opossums. I have heard of them taking small dogs also.
They hunt at dusk & dawn when my birds are out & also, I have open coops and the Great Horned Owls sometimes sit in the trees above the run at night. They have never bothered my chickens. Like a lot of predators, they develop a "taste" for certain things-- around me, it is squirrels & not chicken.
I have a pair of Great Horned Owls nesting nearby & they've been there for years. Great Horned Owls are pretty fierce birds and have been known to take full grown opossums. I have heard of them taking small dogs also.
They hunt at dusk & dawn when my birds are out & also, I have open coops and the Great Horned Owls sometimes sit in the trees above the run at night. They have never bothered my chickens. Like a lot of predators, they develop a "taste" for certain things-- around me, it is squirrels & not chicken.