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Old Sunday 23rd November 2008, 21:38   #1
cosmln
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Aythya nyroca x Netta rufina hybrid? Belgium

Hi,

photographed this duck in an open pool at Knokke-Heist: Zwin (bird hospital).
from the books this will be a hybrid between A.nyroca si A.ferina but jizzz tell me this will be between A.n. and N.r.

any advices/thoughts?

this is my first post when adding a photo... hope i done this well.

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Old Monday 24th November 2008, 00:21   #2
J Jones
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I think you're right..

That reminds me, take a look at this bird that I photographed in Lincolnshire (UK) over the weekend:

http://4.bp.blogspot.com/_5DatzZWQAs...0-h/hybrid.jpg

Presumably Red-crested X Common Pochard?
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Old Monday 24th November 2008, 08:07   #3
Joern Lehmhus
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Both of you are right , Id say from these photos
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Old Monday 24th November 2008, 17:07   #4
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On the A. nyroca x Netta rufina you see a greyish beak with black nail, a fluffed up struckture of head feathers and a paler more greyish area with some vermiculated feathers at the shoulder- all indications of Netta rufina parentage.
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Old Monday 24th November 2008, 22:32   #5
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Thanks Joern for the help and also for the tip on identification of this hybrid.

Also thanks to Josh for completing this with that female hybrid.

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Old Tuesday 25th November 2008, 18:38   #6
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Another Aythya nyroca x Netta rufina for comparison:

http://www.ornitho.ch/index.php?m_id=54&mid=32588

http://www.ornitho.ch/index.php?m_id...skip&mid=32587

here you see the beak has a slightly more reddish tinge than in yours - hybrids are more variable than pure species...

and Aythya nyroca x ferina for comparison:

http://www.ornitho.ch/index.php?m_id=54&mid=33346

http://www.ornitho.ch/index.php?m_id=54&mid=32509

http://www.ornitho.ch/index.php?m_id=54&mid=32058

http://www.ornitho.ch/index.php?m_id=54&mid=30787

http://www.ornitho.ch/index.php?m_id=54&mid=29426
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