Date: 7/1/18 5:26 am
From: Robert Reeves <birder.reeves...>
Subject: [texbirds] Re: Red Phase E. Screech Owl??
Interesting discussion...my daughter has a breeding pair at her house in
north Austin. One is rufous (we presume the female due to behavior) and
the other gray. They've fledged two owlets each of the last two springs
from the roost box that we got from Cliff Shackleford.

On Thu, Jun 28, 2018, 6:52 PM Susan Heath <sheath...> wrote:

> Yes that’s true. They weren’t split until 1983 but the paper only
> considered screech-owls in the eastern U.S. so I’m not sure that’s relevant.
>
>
>
> Sue
>
>
>
> *From:* <texbirds-bounce...> [mailto:
> <texbirds-bounce...>] *On Behalf Of *Keith Arnold
> *Sent:* Thursday, June 28, 2018 6:36 PM
> *To:* <sheath...>
> *Cc:* <texbirds...>
> *Subject:* [texbirds] Re: Red Phase E. Screech Owl??
>
>
>
> Susan,
>
> Denis and I overlapped as grad students and I spent a lot of time with
> Denis and his family at the George Reserve.
>
> Denis’s study was an incredible task for the time. However, unless my
> memory is faulty, at that time, the Western and Eastern Screech-Owls has
> not yet been “split”.
>
>
>
> Keith Arnold
>
> Bryan/BRTC, TAMU
>
> Sent from my iPhone
>
>
> On Jun 28, 2018, at 5:44 PM, Susan Heath <sheath...> wrote:
>
> There is a paper by D.P. Owen from 1963 which investigates the color morph
> cline in Eastern Screech-Owls. The summary at the end states that the
> relative frequency of rufous birds varies geographically in the form of a
> cline from north to south; about a quarter or less or the northern
> population is rufous, while in the South (the Gulf coast and Florida
> excepted) up to three-quarters of the population may be rufous. I
> remembered this because my ancient ornithology textbook from college has a
> map of the U.S. with screech-owl morphs mapped out that shows that the
> rufous morph is more common at the center of the range and becomes less and
> less prevalent as you get farther from the center of the range. You can
> read the whole paper here:
>
>
>
>
> https://sora.unm.edu/sites/default/files/journals/wilson/v075n02/p0183-p0190.pdf
>
>
>
> Sue
>
>
>
> *From:* <texbirds-bounce...> [
> mailto:<texbirds-bounce...> <texbirds-bounce...>] *On
> Behalf Of *Kleb Woods (Commissioner Pct. 3)
> *Sent:* Thursday, June 28, 2018 1:44 PM
> *To:* <texbirds...>
> *Subject:* [texbirds] Re: Red Phase E. Screech Owl??
>
>
>
> We have a rufous morph Eastern Screech-Owl that has used the same nest box
> for the last 3+ years at Kleb Woods Nature Center in Harris County. We saw
> downy chicks two years but couldn’t tell what color they would end up.
> However, that doesn’t really speak to how common they are, as that is the
> only rufous morph Eastern Screech-Owl I have seen.
>
>
>
> On a side note (and this is definitely going down a rabbit hole, so feel
> free to ignore if it doesn’t interest you), I have always used the word
> “morph” when describing these color variations, but I know many use the
> term “phase” or “form”. I tried looking into it to see if one was more
> proper or preferred, but it appears to be more controversial than I
> thought! Does anybody here have thoughts on this? I always find these kinds
> of discussions enlightening. Also, while looking into this, I learned a new
> word: orismology. That is definitely going to be part of my vocabulary now!
>
>
>
>
>
> Kendra Kocab, Naturalist
>
> Kleb Woods Nature Center
>
> 281-357-5324
>
>
>
> Harris County Precinct 3
>
> *Steve Radack Commissioner*
>
> www.pct3.com
>
>
>
>
>
>
>
> *From:* <texbirds-bounce...> <texbirds-bounce...> *On
> Behalf Of *Gary Roberts
> *Sent:* Thursday, June 28, 2018 12:13 PM
> *To:* <texbirds...>
> *Subject:* [texbirds] Red Phase E. Screech Owl??
>
>
>
> Last night, while watching TV, a large bird flew into the patio glass
> door. It fell to the patio and I went to see if I could revive it--or keep
> it for a specimen for someone's lab. When I tried to pick it up, it revived
> and flew away. It was a Red Phase Eastern Screech Owl!
>
>
>
> In all the years of birding, leading tours at Bentsen Rio Grande for ten
> years and living here in Texas, I had never seen anything but Grey Phase E.
> Screech Owls.
>
>
>
> Is this a rare sighting only for me, or are they common?
>
>
>
> Never Before,
>
>
>
> S. Gary & "Gene" Roberts
>
> Austin, Texas
>
>

 
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