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<p>Kevin,</p>
<p> THANKS for the link to this excellent article. I read it thru
- fairly quickly - and definitely studied</p>
<p>the photos and captions. I have to admit that I'm still confused
- I'm pretty sure I've seen RTH</p>
<p>that have coloring that is the same or at least close to the
descriptions. In fact, I'm even more</p>
<p>convinced that this color markings difference is within what I
consider to be well within the range</p>
<p>of variations that I've seen.</p>
<p><br>
</p>
<p>All,</p>
<p> This brings up further questions:</p>
<p> What exactly is a sub-species?". Can/do they interbreed with
other birds of the same species? If they</p>
<p>can interbreed then, to my way of thinking at least, that makes
the whole sub-species thing "weak".<br>
</p>
<p> Is range/frequency of occurence of a color variation in a
geographic area enough to distiguish a sub-species? <br>
</p>
<p> I have often heard of/read about color variations that are
regional - even in RTH. But, should a bird</p>
<p>wander away from its original territory - does that make it a
different subspecies that is far from home - or</p>
<p>is it simply a color variation?</p>
<p> With respect to RTH are we saying that the
Eastern/Western/Northern birds rarely, if ever, change areas?</p>
<p> What actually happens in the geographic areas where more than
one sub-species is near each other?<br>
</p>
<p><br>
</p>
<p>
- I agree with Kevin - this is a
rabbit hole ... Jim<br>
</p>
<div class="moz-cite-prefix">On 9/8/2024 11:25 PM, Kevin Lucas
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CA+YY600cBRGbm8uAu1RKX_+AuPb0QsO04KtdtUauEXx4Vc5dCQ@mail.gmail.com">
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<div class="gmail_default" style="font-size:large">Jim,</div>
<div class="gmail_default" style="font-size:large">For quite a
while I've read few Tweeters posts, but read yours tonight and
started down that rabbit hole. Here's a link to an article by
well respected experts that might be of help to you. I only
just started into it.</div>
<div class="gmail_default" style="font-size:large"><a
href="https://northernredtails.wordpress.com/wp-content/uploads/2014/08/rth_aabieticiola_north_american_birds_march_2014.pdf"
moz-do-not-send="true" class="moz-txt-link-freetext">https://northernredtails.wordpress.com/wp-content/uploads/2014/08/rth_aabieticiola_north_american_birds_march_2014.pdf</a><br>
</div>
<div class="gmail_default" style="font-size:large">Regards,</div>
<div class="gmail_default" style="font-size:large">Kevin Lucas</div>
<div class="gmail_default" style="font-size:large">Yakima
County, WA</div>
</div>
<br>
</blockquote>
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