Great shots. He may be drinking and bathing. Red tail hawks aren't agile enough to catch very many birds. they are more likely to dive onto bunnies and rodents.

Thank you for the identification. These birds are well named for their high aerial gliding and diving. Regards, Kent

Thanks! So when do their tails get the reddish plumage? This one had brown striped tail feathers, I thought that the adults had red tails but I know very little about red tailed hawks so I thought I would ask, thanks! Oh, also, what's that whistling noise that it is making? There is a redtailed hawk couple that lives in my area, I used To see them Together all the time, now they seem to be hanging out solo mostly, I wondered if this one might be one of their "kids" from this year or year before, this one's plumage looks a lot darker than the male and female I usually see in the area.

Yep, same crop-gorged immature redtail.