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help please from Guanacaste, NW Costa Rica

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Old Friday 16th January 2015, 02:31   #1
Deb335077
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help please from Guanacaste, NW Costa Rica

Please help with a few from Guanacaste in the North West corner of Costa Rica taken this week
1. maybe one of the black hawks
2. which wren
3. which trogen
4. which oriole
5. maybe Hoffman's woodpecker
thanks for any help given
Debbie
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Old Friday 16th January 2015, 08:12   #2
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1,. I'd say Mangrove Black Hawk, but not 100% certain...
2. Rufous-naped Wren
3. ?
4. Streak-backed Oriole
5. Yes, Hoffman's
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Old Friday 16th January 2015, 09:55   #3
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3 must be Violaceous Trogon
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Old Friday 16th January 2015, 10:11   #4
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I would go Black headed based on the apparently blueish orbital ring.
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Old Friday 16th January 2015, 11:00   #5
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Quote:
Originally Posted by dwatsonbirder View Post
I would go Black headed based on the apparently blueish orbital ring.
You are right, Black-headed Trogon it is.
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Old Friday 16th January 2015, 11:26   #6
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Nice one with the Trogon :-) I don't have nearly enough experience to tell them apart from the photo (I haven't seen either - dammit). Oh well, yet another excuse to go again one day ;-)
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Old Friday 16th January 2015, 12:39   #7
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I too think that the black hawk most likely is Common, compare: http://www.birdforum.net/opus/Common_Black_Hawk

Notice that Mangrove BH is lumped into Common, and anyway, the originally described Mangrove was subspecies subtilis which is found in NW South America only.

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Old Friday 16th January 2015, 14:28   #8
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Interesting - I was under the impression that the Common was only found on the Atlantic Coast and the Mangrove all the way up the Pacific side (at least according to Helms) - then again they are described as being possibly conspecific. I have to admit though that I can't see any difference between the two and I've been almost in touching distance of both!
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Old Friday 16th January 2015, 14:31   #9
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Take a look at:
http://www.birdforum.net/showthread....ove+black+hawk

I know there was an earlier thread about this group, but cannot find it right now.

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Old Friday 16th January 2015, 17:39   #10
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Thanks Niels, makes sense, although I'm now one species less on my Costa Rica and world list (or would be if I could ever be bothered to add them all up). ;-)
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Old Friday 16th January 2015, 22:01   #11
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Common and mangrove black hawks are now considered conspecific (AOU NACC and others). There was very little reason for their split.
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