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p.2 #5 · Oystercatchers and a Merganser | |
Very nice Bonnie. I especially like 1,2, and 4. Not that there is anything wrong with 3 
I have noticed the "flecks" in the eyes (those that look like globular extensions of the pupil) before, in African Oystercatchers, and I just tried to find some info now... A fairly recent paper suggests that these flecks are somewhat sex-dependent. i.e. Those with the largest (or most) flecks are probably female. Anyways, that was sort of interesting.
Also, young birds don't have as bright yellow of an iris, and as defined an eye ring. So, maybe the individual closest to the front in #2 is a young one.
The function/cause of the eye flecks is unknown.
OKAY - I'm done rambling on 
Cool image from the paper I was talking about above (Guzetti et al., 2008):

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