I think that each subspecies can have dark and light morph individuals, with quite a bit of variation among all plumages. Check out the article at aba.org by Jerry Liguori and Brian Sullivan, "Comparison of Harlan's with Western and Eastern Red-tailed Hawks." I haven't read it, just now googled it, so I don't know if it will be helpful. Robert Reeves Pflugerville On Tuesday, January 27, 2015, David Sarkozi <david@xxxxxxxxxxx> wrote: > Here is a question that I can't find in my field guides. What > subspecies is a dark morph red-tailed hawk considered? I was reviewing > a report of a Harlen's Hawk in eBird that turned out to be a Dark > Morph. Since that isn't a subspecies, you can't list it as that in > eBird, but thinking about it, what subspecies is it a part of? > > -- > David Sarkozi > Houston, TX > (713) 412-4409 twitter ID dsarkozi > Edit your Freelists account settings for TEXBIRDS at > //www.freelists.org/list/texbirds > > Reposting of traffic from TEXBIRDS is prohibited without seeking permission > from the List Owner > > > Edit your Freelists account settings for TEXBIRDS at //www.freelists.org/list/texbirds Reposting of traffic from TEXBIRDS is prohibited without seeking permission from the List Owner