[Tweeters] Fw: Kent Valley Northern Red-tailed Hawk

[MARVIN BREECE via Tweeters]

Birders have asked me about the field
marks of the current Kent Valley NORTHERN RED-TAILED
HAWK.  Here they are, copy/pasted from my ebird report:
*	reddish-brown head dribbling streaks onto the breast
*	dark throat with white streaks
*	prominent and dark belly band
*	underwing less heavily marked than on calurus (western)
*	deep brown back
*	rather thick, black subterminal tail band
*	primary tips do not reach tip of tail on perched bird

 
For
those interested in Red-tailed Hawk (RTHA) subspecies, here is a link to a
distribution map.  
https://redtailedhawkproject.org/subspecies-guide/<https://webmail.centurylink.net/app/Utilities/gateway_url.asp?umsgid=be75c8f2-c9c8-4a68-bbb1-8fa40f4910be&uurl=https%3A//redtailedhawkproject.org/subspecies-guide/>
Scroll
down for translation to common names.
 
A good
introduction to Northern Red-tailed Hawk is the article by Liguori & Sullivan
that Kevin Lucas provided earlier. Here it is again    :https://northernredtails.wordpress.com/wp-content/uploads/2014/08/rth_aabieticiola_north_american_birds_march_2014.pdf<https://webmail.centurylink.net/app/Utilities/gateway_url.asp?umsgid=be75c8f2-c9c8-4a68-bbb1-8fa40f4910be&uurl=https%3A//northernredtails.wordpress.com/wp-content/uploads/2014/08/rth_aabieticiola_north_american_birds_march_2014.pdf>

An
internet search will turn up several articles about this proposed subspecies. 
At this point, identification of Northern Red-tailed Hawk seems more of an art to me.  Differences with other RTHAs are subtle.   


Marv Breece
Tukwila, WA
marvbreece at q.com






On Sun, 8 Sep, 2024 at 8:09 AM, me <marvbreece at q.com> wrote:
 

To: tweeters at u.washington.edu




On 9.7.24 I
observed an adult NORTHERN (ABIETICOLA) RED-TAILED HAWK in the Kent Valley
along 78th Ave S, just north of S 277th   St. 
Here are links to videos of that bird. 
https://flic.kr/p/2qf2FKp
https://flic.kr/p/2qf26ab
I discovered
this bird in juvenile plumage on 03.30.24<http://03.30.24>.  It was extremely pale in contrast to western red-tails & I thought it
might molt into an adult eastern, for easier ID.  Recently, after molting, Bill Clark told me
that the bird was an adult northern.
There is an entire album of this molting bird over a 5 month period of time on Flickr at: <https://flic.kr/s/aHBqjBmtck>https://flic.kr/s/aHBqjBmtck
For more information see ebird report:
Checklist S194409252
This would
be the first confirmed ebird record of Northern Red-tailed Hawk in the state of Washington.


Marv Breece
Tulwila, WA
marvbreece at q.com<mailto:marvbreece at q.com>
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