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gstacks

Scaup question

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This looks like a greater to me.  Most will look at the bill and say it's bigger with a larger nail, characteristic of a greater.  They will also comment on the lack of a peak on the head.  What does is for me is the appearance of cheeks,  which I don't notice as much in Lessers.

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Posted (edited)

Definitely a Lesser Scaup with the small, parallel-sided nail 

Edited by AlexHenry
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1 hour ago, Jefferson Shank said:

What are you talking about there.

That black mark on the tip of the bill is called a nail.  It's shaped differently on a Greater.

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This is a good debate....

According to the 'cobirds.org' article, the large jowls and higher eye position suggests Greater.  It also suggests not solely using the nail for the ID.....

However, many male Greater Scaup have the black restricted to the nail, with the black forming a rectangle (upper left picture) as in Lesser Scaup 

 I'm not convinced yet....I still say Greater.

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Coarseness of barring on back and head shape (taller than deep, somewhat back-peaked) suggests Lesser to me

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The barring I can get behind for sure!  For me, the head shape IS more deep than tall with no back peak.  Interesting how the same image can be interpreted differently.  Good point with the barring though.

 

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