[Tweeters] Five Woodpecker Day

Kevin Purcell kevinpurcell at pobox.com
Wed Jun 3 11:56:50 PDT 2009

In Wenas in an area where the ranges do overlap. So I don't think you
can say either from range.




> The ranges of Dusky Grouse and Sooty Grouse meet and overlap on the

> east slope of the Cascades, creating a zone of confusion between

> the two species.




They also hybridize to annoy listers :-)

So it's down to the field marks ... and a belief you are not looking
at a hybrid.

> The most useful field mark for the male Sooty is the broad gray

> terminal band on the dark tail; the male Dusky’s tail is all-dark

> with no more than a touch of gray at the very tips of the tail

> feathers. The air sacs on the male’s neck, visible when expanded in

> display, are yellow in Sooty and purplish-red in Dusky. Females of

> the two species are nearly impossible to separate in the field,

> although Sooty females are slightly darker and more uniformly brown

> (less gray) on average.

"Nobody expects the Spanish Inquisition"

On Jun 3, 2009, at 9:52 AM, Ian Paulsen wrote:

> HI:

> Shouldn't that be Sooty Grouse?

Kevin Purcell
kevinpurcell at pobox.com

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