Subject: [Tweeters] Meaning of double male and double female symbols?
Date: Sat Jul 25 21:05:37 PDT 2020
From: Devon Comstock - devonc78 at gmail.com

I don't have the same Sibley version you must have, but I believe the
double gender symbols are just a reference to the plural. i.e. in the
Audubon painting of the pileated woodpeckers in the given example, it
depicts 1 female (♀️) and 3 males (♂️♂️).

Hope that helps, if not some other smart birder will surely have an answer
for you.

Cheers,
Devon




On Sat, Jul 25, 2020, 20:17 Whitney Neufeld-Kaiser <whitney.n.k at gmail.com>
wrote:


> Hi, Tweets. I recently noticed that David Sibley uses double male and

> double female symbols in his guide book, and I don't know what those mean.

> I looked high and low for a legend, to no avail. Can anyone help?

>

> If you have a Sibley guidebook or app sitting next to you, a double male

> symbol shows up in the House Finch entry in the note that "some 1st year

> [double male symbol] identical" to adult female. And the double male and

> double female symbols both appear in his Pine Grosbeak entry with the note

> that "some [double female symbol] and 1st year [double male symbol] have

> russet plumage."

>

> An example of the double male symbol is also here:

> https://en.wikipedia.org/wiki/Pileated_woodpecker#/media/File:111_Pileated_Woodpecker,_b.jpg

>

> Thanks!

> Whitney Neufeld-Kaiser

> Seattle, WA

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