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Female Common Goldeneyes with Group of Male/Female Greater Scaups? (1 Viewer)


New member
Hey there!

I'm new to birding, so there are still many basics I don't know yet. So bear with me if I'm missing some obvious stuff.

Yesterday, I was out at a seaside park in Fukuoka (which in south-west Japan). I saw a big flock of ducks off the coast (maybe 100 or so) and identified them to be mostly greater scaups. Among them though, I saw two very different types of females: one was clearly greater scaups, but the other looked like female common goldeneyes (in particular, there was no white at the base of the bill). However, there wasn't a single male common goldeneye to be found. I was surprised by this distribution... Is this a common behavior for female ducks to group up with males/females of another duck species but with no males of their own species? Alternatively, is it more likely that I've misidentified winter->summer transitioning plumage of female greater scaups as a female common goldeneye?

Thanks in advance for your help!



Virtually unknown member
United Kingdom
A first winter male would resemble an adult female in terms of plumage but with a much reduced or no white patch at the base of the bill.

The bill size and shape is different between the two species.


Virtually unknown member
United Kingdom
No worries. Sorry, perhaps I should have explained the term but at least it gave you the chance for a bit of research!

Welcome to the forum by the way.
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