Spotting

Looks okay for an immature Broad-winged Hawk to me. Looks more "compact" than a Red-shouldered Hawk as far as overall appearance goes. The streaking, especially that on the upper breast, looks better for a young Broad-winged also.

Looks rather like a Broad-winged Hawk, Buteo platypterus. Though that species would not normally be seen in Jacksonville, FL, in the winter, it is not improbable to find it there now.