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Soortgroepen => Wat is dit voor vogel? / Determinatie => Vogels => Hybriden => Topic gestart door: laatvlieger op maart 02, 2007, 18:56:04 PM

Titel: Grote canadese gans x ??
Bericht door: laatvlieger op maart 02, 2007, 18:56:04 PM
(http://www.waarneming.nl/fotonew/4/123824.jpg)
http://www.waarneming.nl/foto_details.php?id=123824 (http://www.waarneming.nl/foto_details.php?id=123824)
Photo 1: Gerard Ritstier
Titel: Grote canadese gans x ??
Bericht door: laatvlieger op maart 02, 2007, 18:59:25 PM
De roze poten en de geribbelde hals doen sterk aan grauwe gans denken, maar die kol....

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The pink legs and the longitudinal ridges on the neck makes you think of a graylag goose, but then..... where does this white front comes from??  
Titel: Grote canadese gans x ??
Bericht door: Alcedo atthis op maart 02, 2007, 19:54:01 PM
I think this is a hybrid Canada goose with a domestic goose which has chinese goose genes,
see a Canada x Chinese goose here, this is the other more canada-goose like phead and neck pattern they can show, not the more chinese -goose (or swan goose)- like pattern of head and neck as in the other thread.

Such hybrids can vary between the 2 extremes in neck patterns...
Titel: Grote canadese gans x ??
Bericht door: Alcedo atthis op maart 26, 2007, 15:32:33 PM
Another bird of such a hybrid combination, but with the frontal part of the neck somewhat lighter  (This can go even further so that you get such hybrids also with a very swan goose like neck pattern)

http://www.pbase.com/kaboommals/image/71428370 (http://www.pbase.com/kaboommals/image/71428370)

http://www.pbase.com/kaboommals/image/71428369 (http://www.pbase.com/kaboommals/image/71428369)

http://www.pbase.com/kaboommals/image/71428371 (http://www.pbase.com/kaboommals/image/71428371)

http://www.pbase.com/image/70802328 (http://www.pbase.com/image/70802328)


The hybrids here i would also consider to be the same combination, but juvenile birds.

http://users.utu.fi/hlehto/photo/hybrid/braxans2.shtml (http://users.utu.fi/hlehto/photo/hybrid/braxans2.shtml)

However, if you seek the photos with Hybrid1, you see here the neck pattern is on the extreme towards the swan goose side.