I found the Laurel article online with free access at: http://www.fwspubs.org/doi/pdf/10.3996/nafa.71.0001
On a quick scan of the paper, he seems to be saying that in his study of northern Ohio he found that 9 to 27 percent of the screech owls were red, with 2 to 3 % intermediate, and the rest gray. I'm wondering if intermediate is the brown morph?
Maybe the Ohio Division of Wildlife "Owls of Ohio cd guidebook" got their percentages from this paper because they say: "Red morphs are most frequent in southern Ohio where they may be as common as gray morphs, at least locally, and gray morphs become predominant to the north. In northwestern Ohio, 75 to 90 percent of screech-owls are of the gray morph. There is also a much rarer intermediate brown morph." (I can see the intermediate morph is the brown morph.)
This guidebook is free online http://wildlife.ohiodnr.gov/stay-informed/publications as are 15 other identification guides and hard copies of the guides and CD's of calls are free by calling the DNR or picking them up at nature centers. Don ComisHoward, Ohio (Apple Valley, Knox County, near Mt. Vernon)
On Tuesday, October 27, 2015 10:20 AM, John Pogacnik <[log in to unmask]> wrote:
If you birded Ohio years (and years) ago, you may remember Laurel Van Camp. He was a game protector in Northwest Ohio and later a wildlife naturalist at Magee Marsh Wildlife Area. Laurel did a lot of work with banding screech-owls and actually wrote a paper, titled The Screech Owl: Its Life History and Population Ecology in Northern Ohio
Unfortunately I don't have it handy but he talked a bit about the percentage of the different color phases, not just red and gray, but also brown. If i can remember where it is, I'll take a look. I'm not sure whether its available on the internet. It was an excellent paper, worth reading. Laurel was a wealth of information.
John Pogacnik
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