This has been a long time in coming and is based on scientific data.
Personally I feel there is a difference in vocalization with American Crows
and the size difference can be quite obvious. Also habitat: "Northwestern"
Crows are rarely found too far from shore. To me there also is a difference
between calls of American Crows here in the Northwest and birds on the East
Coast. I have never heard a crow in Maryland doing the "meow" call you can
hear here frequently. Another interesting observation, is that I have never
seen a roadkill-ed crow on the East Coast, but see many around here! Just
thinking!

On Tue, Jun 30, 2020 at 12:55 PM dick <dick at dkporter.net> wrote:


>

> The 2020 AOS Supplement is out! - American Birding Association

>

>

> https://www.aba.org/2020-aos-supplement/

>

>

>

>

> Sent from my Verizon, Samsung Galaxy smartphone

>

> _______________________________________________

> Tweeters mailing list

> Tweeters at u.washington.edu

> http://mailman11.u.washington.edu/mailman/listinfo/tweeters

>



--
*Hans Feddern*
Twin Lakes/Federal Way, WA
thefedderns at gmail.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman11.u.washington.edu/pipermail/tweeters/attachments/20200630/9dbcdecc/attachment.html>