Welcome to Whatbird!
My first impression was Red-tailed Hawk. I'm honestly not sure if the photos in the links you provided are Rough-legged Hawks (The shoulders are white, not black like in a RLHA in the first one and the tail in the second one supports Red-tail). I'm not sure they ever have that few markings on the belly and legs. also, the tail on your bird is striped and has very little white at the tip or the base which I believe heavily supports red-tail.
If you look at Rough-legged Hawk tail feathers vs Red-tailed Hawk feathers you can see the difference. (Red-tailed Hawk immature tail feathers are basically colorless versions of adult's).