l_raty
laurent raty
This is one of the possibilities I was trying to suggest above. ("But, rather, a specimen of a wholly dark [ash-grey] dipper sp.") Albeit in fact, "ash-grey" (Brehm's "Aschgraue") may match American Dipper better than Brown Dipper, I think -- which, not knowing where the bird came from, leaves me a bit hesitant.As I understand it, according to Rey; "Cinclus Khevenhülleri" ought to be a synonym of the Brown Dipper Cinclus p. pallasii Temminck, 1820 (even if Rey wrote it with single ending-i.)
This is how I understand Hartert & Kleinschmidt's comment.Or possibly only a large, single specimen with deformed/abnormal beak ...
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