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Juvenile Tern?? - South Australia

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Old Tuesday 26th December 2006, 07:01   #1
smp
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Juvenile Tern?? - South Australia

This Tern was alone and continually flying over a small freshwater lake about 6 kilometres inland north of Adelaide, South Australia. (Lake was part of a series of wetlands). Can anyone tell me what species of Tern it is??? (Sorry about the quality of the photos).
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Old Tuesday 26th December 2006, 09:15   #2
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Don't have any books today, so can't check anything but definitely a Chlidonias or "Marsh" Tern. I would guess it was dipping down to water surface but not actually diving like a sea tern, which is characteristic of this group?

I don't think it's a Black Tern, Chlidonias niger, and I suspect it is a White-Winged Black Tern, Chlidonias leucopterus, but cannot definitely rule out Whiskered Tern, Chlidonias hybridus, without references as I don't know it very well.

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Old Tuesday 26th December 2006, 10:30   #3
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I'd go for Whiskered Tern....
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Old Tuesday 26th December 2006, 11:39   #4
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Bill is pretty heavy, and the cap is too strongly-marked for White-winged Black. I'd have to agree with Marc here. Whiskered Tern.
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Old Tuesday 26th December 2006, 13:08   #5
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Thank you all very much
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Old Tuesday 26th December 2006, 18:51   #6
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The grey bum also rules out WWBT!
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