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What loons? (New York) (1 Viewer)

Cassy

Well-known member
Dear birders,

Do you know what loon and how to tell a Common Loon or a Red-throated loon? Usually i see the beak and size but in flight they are hard to see.I took the photos from New York.

_A9A1183.jpg

Common-Looni8i.jpg

Thanks for your helps
 
Because of the bill size, I'm gonna go with Red-throated. I may well be wrong though. Although the Common Loon is more appropriate for New York assuming this was captured in NY.
 
I can see the beak just fine in these photos.

In addition to the beak of red-throated being thinner and less symmetric (the bottom half tapers upward while the top half stays nearly straight) than Common, red-throated has a different neck pattern. Common has a white stripe partly around the neck; though the white location varies between breeding and non-breeding plumage, the neck will almost always have a patchy quality, even in transition.

Red-throated in non-breeding looks like your second photo: fairly clean, fairly straight-along-the-line-of-the-neck transition between black and white, with a little "comma" hanging down behind the eye. Your first photo has a greyer throat, I think left over from juvenile plumage, but still a fairly clean black-white line along the neck. Compare the much patchier neck of this common loon (and note the thick beak):
http://www.birdforum.net/opus/Image:071028_Common_Loon_0470.jpg
 
The "star-spangled" appearance of your second bird's upperparts is a good illustration of why the Red-throated [Loon/Diver] is called Gavia stellata :)
 
Anyone else find the bill shape odd for pic #1? If I had to bet I would go with juvenile red-throated loon because of location and the speckling on the back of the neck. However, the bill looks more like a pacific and in the unusual pose that it is in its neck does not appear to be hanging like a red-throated loon. If that speckling wasn't prominent on the back of the neck I would be calling this a pacific. Any thoughts?
 
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