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Auteur Topic: Anas hybrid -any ideas  (gelezen 247 keer)

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Alcedo atthis

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Anas hybrid -any ideas
« Gepost op: mei 22, 2007, 10:15:02 am »

Gelogd
greetings,
Jörn Lehmhus

laatvlieger

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Anas hybrid -any ideas
« Reactie #1 Gepost op: mei 22, 2007, 10:30:33 am »

Well one parent will be a wigeon (not yet specified), the other?  
Gelogd
Groet,

Wouter Teunissen


Mijn Weblog: http://birdboredom.blogspot.com/

Alcedo atthis

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Anas hybrid -any ideas
« Reactie #2 Gepost op: mei 22, 2007, 12:20:18 pm »

I thought maybe chiloe wigeon x northern pintail when I first saw this photo some time ago, but now i thinhk it must be something different, because of the following reasons:

Chiloe wigeon in moszt hybrids causes reduction of black on undertail coverts.
but this bird has black on undertail coverts as both northern species of wigeon.

And the very rich chestnut body colour also needs an explanation...




so maybe North american Wigeon (Anas americana) x Chestnut teal (Anas castanea)???  
Gelogd
greetings,
Jörn Lehmhus

laatvlieger

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Anas hybrid -any ideas
« Reactie #3 Gepost op: mei 22, 2007, 14:07:10 pm »

During moult ducks get this special moulting plumage a plumage we in Holland call "eclipse". I'm not sure wether that's also the international term, so that's why I stated it here.

During this eclipse plumage european wigeons can have the colour we see in this bird. For some examples see:
http://waarneming.nl/soort.php?id=176&soort=Smient&tab=info


This might not explain this bird, but is something we maybe have to keep in mind.
How do you by the way explain the green head colour?    
Gelogd
Groet,

Wouter Teunissen


Mijn Weblog: http://birdboredom.blogspot.com/

JohanvantBosch

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Anas hybrid -any ideas
« Reactie #4 Gepost op: mei 22, 2007, 14:15:03 pm »

Citaat
I thought maybe chiloe wigeon x northern pintail when I first saw this photo some time ago, but now i thinhk it must be something different, because of the following reasons:

 
This was also my first thought.
Because of what you say I understand you have dropped the Chiloe wigeon, but not why you've dropped northern pintail.


Citaat
so maybe North american Wigeon (Anas americana) x Chestnut teal (Anas castanea)???
Northern pintail x american wigeon??
« Laatst bewerkt op: mei 22, 2007, 14:15:38 pm door JohanvantBosch »
Gelogd

laatvlieger

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Anas hybrid -any ideas
« Reactie #5 Gepost op: mei 22, 2007, 14:23:30 pm »

Well but what would account for a pintail? I don't see any pintail characters to be honest. I might see some mallard characters though..  
Gelogd
Groet,

Wouter Teunissen


Mijn Weblog: http://birdboredom.blogspot.com/

JohanvantBosch

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Anas hybrid -any ideas
« Reactie #6 Gepost op: mei 22, 2007, 14:31:39 pm »

Citaat
Well but what would account for a pintail? I don't see any pintail characters to be honest. I might see some mallard characters though..
the tail
bill structure

indeed that is not a lot...

laatvlieger

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Anas hybrid -any ideas
« Reactie #7 Gepost op: mei 22, 2007, 14:34:35 pm »

The tail fits better on a wigeon, the've also got a "pin" tail, and the bill, well in a male pintale you would expect at least something of a dark central line over the bill and with a female you would expect a more blurred dark area over the bill. You do'n see any of this back in this hybrid.  
Gelogd
Groet,

Wouter Teunissen


Mijn Weblog: http://birdboredom.blogspot.com/

gjcaspers

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Anas hybrid -any ideas
« Reactie #8 Gepost op: mei 22, 2007, 17:20:59 pm »

The colour pattern looks somewhat like a Chestnut Teal without the spotting. In what kind of cross could a Chestnut Teal's spotting be reduced? The bird looks bulkier than a Chestnut Teal though, so could Chestnut Teal x self-coloured domestic form of Mallard be an option?

Groet,
Gert-Jan Caspers
Gelogd
Groet,
Gert-Jan Caspers

Alcedo atthis

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Anas hybrid -any ideas
« Reactie #9 Gepost op: mei 23, 2007, 13:39:30 pm »

Citaat
During moult ducks get this special moulting plumage a plumage we in Holland call "eclipse". I'm not sure wether that's also the international term, so that's why I stated it here.

During this eclipse plumage european wigeons can have the colour we see in this bird. For some examples see:
http://waarneming.nl/soort.php?id=176&soort=Smient&tab=info


This might not explain this bird, but is something we maybe have to keep in mind.
How do you by the way explain the green head colour?
It is also "eclipse" or "eclipse plumage" in English.

But if it where explained by eclipse plumage (even of a hybrid)- there shouldn´t be this perfect breeding plumage rear end, I think?

And the tertials are perfect for both northern wigeon species , as well as the whole rear end isds good for these (Slightly better for american, I feel, as tail  looks so pointed). Bill has also typical wigeon coloration.

The chestnut teal would then account for the nice chestnut body coloration as well as for a dark head....

That´s how I came to this Idea- may it be right or wrong....
Gelogd
greetings,
Jörn Lehmhus
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