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Louisiana or Northern Waterthrush

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Old Saturday 22nd February 2020, 11:54   #1
m1sterjay
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Louisiana or Northern Waterthrush

Seems like this differentiation is a tricky one. All the guides mention various differences to focus on. Some guides seem to say the main clue is the whiter supercilium that widens as it goes behind the eye on the Louisians vs. the buffer, narrowing supercilium of the Northern.

Other guides say to judge by overall color of underparts--yellowish hues pointing to Northern.

Others mention the Louisiana's pinker legs and longer bill.

I can find evidence to support either!

This was Early February in the Dominican republic. The wintering range of both species.

Any help would give me some peace of mind.

Thanks!
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Old Saturday 22nd February 2020, 12:22   #2
JWN Andrewes
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The Louisianas I saw in Belize seemed to have a faint yellowish wash to the rear underparts, but much whiter further forward. The Northerns were faintly buffish all the way underneath. Also I felt the Louisiana were greyer on the front half of the upperperts, becoming browner further back, with the Northerns evenly brown above. Based on that I would tentatively call these (this?) Louisiana, with the caveat that the above are recollections from over a decade ago.
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Old Saturday 22nd February 2020, 12:25   #3
Larry Sweetland
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Looking on phone I'm thinking Louisiana. Flared white supercilium looks good, as does buff wash on flanks. Leg colour passable. Throat looks unspotted (but might not on a big screen!). Underparts streaks in general perhaps a little dense and worryingly Northernish, but on the whole, I'd go Louisiana. These can be tough, do get more opinions.
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Old Saturday 22nd February 2020, 12:58   #4
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I’m pretty solidly in the Louisiana camp too. Buff flanks contrasting with white belly is distinctive, and the othe characters mentioned are pro-Louisiana. I think the slight blurring of the images may be making the underparts look more densely streaked than normal (for Louisiana)
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Old Saturday 22nd February 2020, 13:18   #5
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I'd call it a Louisiana as well for the same reasons stated above.
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Old Saturday 22nd February 2020, 15:08   #6
m1sterjay
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Wow. This is my first time on this forum and I've gotten so much help already. Thank you to everyone! I appreciate it. I was leaning heavily to Louisiana, but since I am new to birding wanted to get some more seasoned opinions.

I appreciate you all.
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Old Saturday 22nd February 2020, 15:42   #7
Brian J Small
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Check this article out - note colour of underparts...

https://www.sibleyguides.com/2012/08...waterthrushes/

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Old Saturday 22nd February 2020, 18:09   #8
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Are all images of the same bird? I was leaning Northern for the first image and Louisiana on the rest, which obviously is wrong if it is the same bird.

Niels
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Old Saturday 22nd February 2020, 18:44   #9
Sherpa
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All Louisiana imo. First image shows contrast between colour of supercilium and underparts, as you would expect.
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Old Saturday 22nd February 2020, 23:58   #10
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Quote:
Originally Posted by Sherpa View Post
All Louisiana imo. First image shows contrast between colour of supercilium and underparts, as you would expect.
But no contrast between flank and central underside and underside not white => Northern.

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Old Sunday 23rd February 2020, 02:07   #11
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Louisiana waterthrush
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Old Saturday 29th February 2020, 21:11   #12
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They are all the same bird, yeah. Just what I could grab as it scurried along a riverside.
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