I was surprised to find this owl species nesting on the ground. I read up on it afterward and found a source that said they do (rarely) nest on the ground.
How about a big hint. Here's a picture of a very upset mother.
Not sure on the first picture could it be Prairie Falcon, here's relatives of the second picture a little bit older and taken last year. Blury because its tough to focus while momma's trying to scalp you. Long Eared Owl/Horned Owl