are there other species under this main category?
Yes. There may be at least 14 recognized subspecies
Red-tailed hawk
There may be at least 14 recognized subspecies of "Buteo jamaicensis", which vary in range and in coloration
how many chicks do red tail hawks have One to three how did this bird get its name? UNANSWERABLE
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Red-tailed hawk [SEP] Subspecies
There may be at least 14 recognized subspecies of "Buteo jamaicensis", which vary in range and in coloration. However, not all authors accept every subspecies, particularly some of the insular races of the tropics (which differ only slightly in some cases from the nearest mainland forms) and particularly the Krider's hawks, by far the most controversial red-tailed hawk race as few authors agree on its suitability as a full-fledged subspecies.