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Frigatebirds from Christmas Island (1 Viewer)

orientaldkf

Well-known member
Hi all, would appreciate any ID help on these frigatebirds.

Photos 1-4: Great frigatebird?
Photo 5: Possible christmas island frigatebird?

Thanks in advance!
 

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I'm not very experienced with these, but if nobody else is going to have a go.....

1. Ad./4th yr female Great. Pale throat diagnostic?
2. 3rd/4th yr female Great? White throat, capped appearance.
3. As above?
4. Not sure. Looks like it could be all dark underneath, so maybe ad./4th yr male Great?
5. Hard to say from this picture. Belly patch looks heart-shaped, axiliary spurs visible, so maybe C I? Is the head pale?

Does this article help?

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.691.6104&rep=rep1&type=pdf
 
I did chance upon that paper, it definitely helped! But was still slightly unsure given the poor pictures...but thanks all for pitching in!
 
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