Peterson Field Guide description of a Immature Broad Winged Hawk. “Heavily streaked along sides of neck, breast, and belly: chest often unmarked. Tail has several narrow dark bands: terminal dark band twice as wide as the rest. Rare dark morph, which breeds in Prairie Province, has dark wing lining but shows usual Broad-winged tail pattern.”
You did not indicate where you live in the country which is used to identify birds. I do not believe it is a red tailed hawk. I have seen many and bird watch as a hobby.
Voice: High-pitched, shrill, two-part downward pwe-eeeeee. Nest in trees usually 24-40 feet up. Small poorly built out of sticks, dead leaves. Usually a re-build squirrel, hawk or crow nest.
Range N. Dakota (Turtle Mts.) Nebraska (Missouri R.) Kansas (rare) Oklahoma and east Texas Minnesota and south to Louisiana. Thorough East US rarely in Florida.
Broadwings are eastern birds, unlikely to see them breed in Colorado well outside their range. Not to mention Grace’s pics show many of the back feathers edged with white, looks like distinct white V’s...like a redtail, not a broadwing, which if they show white at all it will be in round spots rather than V’s. The V’s are a good marker.
The tail in her pic has a distinct white end, also common though not always present in redtails, with fine dark banding... whereas a BW would have much broader dark bands with only a hint of white, if any, on the tip.