Re: American oystercatcher at crescent bay point

Ryan Winkleman

Just a note that anybody who chases this bird should be prepared to take copious amounts of photos until the identification is confirmed. Crescent Bay has hosted hybrid oystercatchers in the past. Any claim of an American Oystercatcher in Orange County will need to be examined in detail by experienced birders either in person or via good photographs to ensure that the bird is not/not likely a hybrid. This is based on a number of phenotypic characteristics that are numerically scored.

The basis that is used for determining this is the Jehl's Scale, which Steve Sosensky uploaded to the listserv a number of years back. The file with the identification criteria is here:

On Sat, Sep 29, 2018, 8:11 AM calvin hardcastle <chhardcastle@...> wrote:

-- Susan found an American oystercatcher at crescent bay point in Laguna Beach this morning. Here at 800 on rocks below houses to north. 

Calvin Hardcastle - Irvine

Ryan Winkleman
Rancho Santa Margarita

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