dowitcher


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Posted by Nils Warnock (208.184.187.55) on August 27, 2002 at 11:48:54:

Hi all,

I have been trapping dowitchers in the spring recently
(California and Mexico), and I continue to be challenged
by the identification of SB and LBDO. At first glance,
I would have said this picture is of an adult, molting
LBDO, probably female - it has a long, slightly S shaped
bill and the primary projection appears short (wings
shorter than tail). Primary projections can be tricky to
tell in photographs and this bird is slightly turned toward
the camera, so I am not sure that the wings are actually
shorter than the tail. However, other characteristics
suggest SBDO. The bird is moderately spotted on the
sides with very few bars. LBDO tend to have fine barring
down the sides. There is light spotting on the flanks
and there appears to be light spotting in the belly area.
These areas are rarely spotted (or barred) in LBDO.
Even in a molting bird (and based on the date and appearance,
this bird recently started molting), I would have expected
more orange in the breast if it were a LBDO. There is a
fair amount of white showing throughout the breast of this
bird. Another clue is the habitat - in the picture this bird
looks as if it is out on mudflats. As a rule, LBDO are
generally found in areas with fresher water, brackish marshes,
etc. SBDO are more often found directly on the coast.

My guess: adult, female (with very long bill) SBDO

Thanks for the picture.

Cheers,

Nils

Nils Warnock
Point Reyes Bird Observatory


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