The only thing a great horned should be worried about is another great horned. Just checking, are you the falcon wasn't a Merlin? Just seems weird behaviour for a peregrine, in the woods hunting voles? Sounds like more Merlin like to me.
Looked it up definitely a Merlin. Never even heard of Merlin before. Thanks!
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Cool, glad that helped identify the #birdstr. Sometimes behaviour and habitat can identify birdsbetter than any plumage details.
Update, after spending way too many hours on bird sites and listening to different calls all the hawks make. I am 95% sure it is a Cooper’s hawk.