Hi Bill et al, I hope it's ok to interject some out-of-Tennessee experience; here in Arizona we get very few Harlan's and even fewer light morphs, but there have been a few that have been photographed. You can view one (with a writeup on ID points) here: http://www.azfo.org/gallery/2009/html5/HRLH_MPG_Core_20091213.html I am not an expert on Harlan's by any stretch of the imagination, but to summarize, overall color and the tail are key. Typical light-morph birds have blackish upperparts that lack warm brown tones, with white markings on the scapulars. Underparts lack the rufous tones typical of other Red-tails, with light or moderate belly bands. Light morph Harlan's generally have strong facial patterns as well. Tail patterns in Harlan's Hawk are extraordinarily varied and diverse; no two are alike. Tails can be barred, mottled, spotted, or a combination of all three; often have wavy dark bands, which can be light or heavy, narrow or wide, partial or complete. The color can be white, gray, rufous, with any shade in between, or a combination,. Individual feathers will often have a different pattern or color than other feathers in the same tail! Looking at Jeff's bird, it has a strong facial pattern, and the tail looks good for Harlan's. Appears to have some white spotting on the scapulars and a faint belly band as well. There are a couple links to some helpful pdfs at the bottom of the page; check out the Birding link with all the tail patterns! See other recent Harlan's Hawks (most dark, some intermediate, and one or two light) here: http://www.azfo.org/gallery/1main/photos_tax.html#Birds_of_Prey regards, Andrew -- Andrew Core Tucson, AZ On Mon, Dec 12, 2011 at 3:14 PM, Bill Pulliam wrote: > Jeff-- Light morph Harlan's is a very unfamiliar plumage to most of us; > even when I lived in eastern Colorado, where dark-phase Harlan's were not > all that unusual, we hardly ever saw the light ones. I know I'm kind of > unsure of the critical ID points and I suspect many others here are, too. > It gets short shrift in most field guides. I wonder if you could give us > a summary of what it takes to nail down this ID? I had a bird on the > Savannah CBC a couple of years ago that I suspected but just felt too > little confidence about to actually "call." > > Thanks -- > > Bill Pulliam > Hohenwald TN >