A favorite article of mine here does a great job of breaking down the
subject of black vs Frazari vs hybrid, right from the hybrid zone. A fun
read too.
https://seagullsteve.blogspot.com/2013/06/americanish-oystercatchers-hybrids-vs.html
On Fri, Jul 16, 2021 at 8:43 AM Mike Patterson <celata@xxxxxxxxxxxx> wrote:
It's also worth noting that this is a case where really good photos
fail to be diagnostic photos. It's the difference between taking
well composed "artistic" shots and for the record ID shots.
Even if one were to attempt to score this using the Jehl scale
https://fog.ccsf.edu/~jmorlan/jehl.txt
out of purely scientific, not for listing, curiosity, there are
not enough essential details to diagnose this bird beyond "black and
white" oystercatcher. We need flight shots that show the upperwings,
underwings and tail.
And maybe a couple feathers or some poop for genetic analysis.
--
Mike Patterson
Astoria, OR
I don't know...
http://www.surfbirds.com/community-blogs/northcoastdiaries/?p=3924
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