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Auteur Topic: what do you think of this Aythya ferina  (gelezen 184 keer)

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Alcedo atthis

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what do you think of this Aythya ferina
« Gepost op: juni 11, 2007, 18:43:56 pm »

http://www.birdpix.nl/album_page.php?pic_id=84086


I Think the left bird has some genes from Aythya nyroca, but is unlikely to be a first generation hybrid.

I´d think this could be  a backcross of a hybrid ferina x nyroca  to a ferina.
Gelogd
greetings,
Jörn Lehmhus

gjcaspers

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what do you think of this Aythya ferina
« Reactie #1 Gepost op: juni 11, 2007, 19:11:53 pm »

Can you rule out a backcross of a hybrid Tufted Duck x Common Pochard to Common Pochard? With the pure black breast and undertail coverts, I don't see much of a Ferruginous Duck in this bird.
Gelogd
Groet,
Gert-Jan Caspers

Alcedo atthis

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what do you think of this Aythya ferina
« Reactie #2 Gepost op: juni 11, 2007, 19:26:48 pm »

No , I can´t ...

but on my monitor the eye looks more whitish than yellow and the head is a deep reddish-brown, and the head has this very peaked appearance...

That´s why my first thoughts were this bird involves A.nyroca genes...
Gelogd
greetings,
Jörn Lehmhus
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