[NatureNS] gull ID

From: "Sylvia Fullerton" <sfullert@dal.ca>
To: <naturens@chebucto.ns.ca>
References: <4C52D366.2080705@sydneypenner.ca>
Date: Sat, 7 Aug 2010 17:01:38 -0300
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I'm a little late weighing in on the gull at Cherry Hill Beach. Ring-bills 
are uncommon on this beach, but yesterday there was one there, very similar 
to yours in the photo. Nearby there was also a Laughing Gull, probably in 
second winter plumage.

Sylvia Fullerton
Broad Cove, Lun. Co.
----- Original Message ----- 
From: "Sydney Penner" <sfp@sydneypenner.ca>
To: <naturens@chebucto.ns.ca>
Sent: Friday, July 30, 2010 10:28 AM
Subject: [NatureNS] gull ID


> Hi all,
>
> I dropped in at Cherry Hill today and found a gull that puzzles me. The 
> puzzlement may just have been created by limited visibility (there was 
> wind, rain, and mist) and by confusion on my part. Still, I'm wondering if 
> someone might be willing to look at a few pictures (of rather low quality) 
> and let me know what they think.
>
> Here are two pictures that allow for a size comparison with a Herring Gull 
> at about the same distance:
> http://picasaweb.google.com/sepenner2/CherryHillGull#5499491907295283410
> http://picasaweb.google.com/sepenner2/CherryHillGull#5499491902228246114
>
> Here are two pictures from a bit closer:
> http://picasaweb.google.com/sepenner2/CherryHillGull#5499491912860227154
> http://picasaweb.google.com/sepenner2/CherryHillGull#5499491906756103170
>
> Some salient points:
>
> 1) The gull was quite a lot smaller than the numerous Herring Gulls in the 
> area. I know that there is some variation in Herring Gull sizes, but this 
> gull struck me as too small to be a Herring Gull. But maybe there is even 
> more variation than I think.
>
> 2) My next thought was that it was a Ring-billed Gull. But Ring-billed 
> Gulls were the common gull in New York where I lived for the last five 
> years, and I convinced myself that this bird just didn't quite look right 
> to be a Ring-billed Gull. That said, I definitely still think that 
> Ring-billed is a possibility.
>
> 3) One reason I doubted Ring-billed is the head shape: it looks more 
> rounded to me than what I would have expected. But here it would have been 
> really handy to have a few Ring-billed Gulls sitting around for comparison 
> purposes.
>
> 4) I kept trying to figure out what the colour of its legs was, but the 
> low visibility left me unsure. Generally, the legs didn't look yellow to 
> me, but one could definitely imagine yellow legs with the last of the 
> photos linked to above.
>
> 5) The eyes consistently looked dark to me, but, given the visibility, I'm 
> not sure how much I would stake on that.
>
> 6) One additional piece of information not evident from the photos: the 
> upper side of the tail was entirely white.
>
> A couple of the features I mentioned (head shape, eye colour) might 
> suggest Mew Gull. But (a) Mew Gull doesn't seem very likely around here 
> and (b) not all its features match Mew Gull well (e.g., I would have 
> expected more obvious white crescents on its wings if it were a Mew Gull). 
> I also don't have any experience with Mew Gulls, making such a judgement 
> trickier.
>
> Anyway, if someone can tell me more about this gull, I would be grateful.
>
> Best wishes,
> Sydney
>
>
> Sydney Penner
> 114 Willow Ave.
> Berwick, N.S. B0P 1E0
> sfp@cornell.edu
>
> 

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