Perhaps they use Morse Code.
----- Original Message -----
From: Bob Archer
To: OBOL
Sent: Tuesday, March 07, 2017 8:23 AM
Subject: [obol] Re: Dipper question
Sibley states that no one knows for sure but a guess is as an aid in
communication on noisy streams..
http://www.sibleyguides.com/2013/04/the-white-eyelid-of-american-dipper/
Bob Archer
pdx
On Tue, Mar 7, 2017 at 8:11 AM, Linda Fink <linda@xxxxxxxx> wrote:
Why do Dippers, alone among birds, have white eyelids? White *feathered*
(tiny feathers) eyelids at that. I can think of possible purposes but cannot
find, in a web search, any definitive answer.
Linda Fink, pondering in Grand Ronde
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