One of two sightings at this site in a short time frame, both spotted by other park visitors. (My photos here.)
I think they're different individuals; one (here) has a gap in feathers of left wing which I don't see on the other (150461596).
I promised to post these quickly. At the time, we hoped that we were seeing juvenile eagles. At the distance, it was hard to be certain. But with the photos cropped I have to agree with iNat that both are Red-tails.
One of several circling in the distance.