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Jehl scale analysis of today American Oystercatcher

I received some more pictures of the bird from Aaron Gyllenhaal which show the tail and tail coverts better as well as the upperwing wing stripe.

It keys out conservatively to 34, well within the range of American Oystercatcher.

CHARACTER                             CHARACTER STATE AND

tail coverts             3       white, a few
black mottlings

Tail                           3       basal half of
rectrices white

on upper breast           3       black chest band
bordered by ragged

Belly                          6       entirely white,
as in palliatus

tail coverts             3       mainly white

Thighs                         4       entirely white,
as in palliatus

secondary coverts      3       6-15 mm

   (width of white edging     

   in folded wing)            

of white wing stripe    2       white markings extend to outer
secondaries, but not onto primaries

coverts              3       mainly white

Axillars                       4       white, as in palliatus


Stan Walens, San Diego
Aug. 30, 2019; 4:40 pm

Source: SanDiegoRegionBirding Latest Reports