indische x canadese?

Gestart door laatvlieger, augustus 06, 2007, 23:12:50 PM

Vorige topic - Volgende topic

Jan Harteman

Zou kunnen ja, of Indisch X Brand.

Alcedo atthis

#2
I think it is much more likely that it is Canada x Barheaded goose;

because Barnacle x Barheaded goose hybrids show a dark breast, in most cases very clearly , only rarely this is not so obvious. But it seems to be allways there in Barnacle x barheaded goose:

http://www.bongariliitto.fi/kuvat/01_Sorsa...op/129_2986.jpg

http://www.bongariliitto.fi/kuvat/01_Sorsa...lpi/ansind3.jpg

http://www.bongariliitto.fi/kuvat/01_Sorsa...lpi/ansind2.jpg

http://www.bongariliitto.fi/kuvat/01_Sorsa...pe/Dscf0027.jpg

http://www.bongariliitto.fi/kuvat/01_Sorsa...lpi/ansind1.jpg


Canad-barheaded hybrids only show black on the neck, not on the breast. so here the Dutch bird should be Barheaded x canada goose, as there is no sign of dark breast
greetings,
Jörn Lehmhus

laatvlieger

Thanks, that's what I already expected.  
Groet,

Wouter Teunissen


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

gjcaspers

CiteerI think it is much more likely that it is Canada x Barheaded goose;
because Barnacle x Barheaded goose hybrids show a dark breast, in most cases very clearly , only rarely this is not so obvious. But it seems to be allways there in Barnacle x barheaded goose

Wouldn't you expect a Canada x Bar-headed hybrid to be brown, instead of grey? After all, Canada x Barnacle hybrids and Bar-headed x Greylag hybrids are more or less brown, so brown appears to be dominant over grey in brown x grey crosses.

Also, the bill of this bird is smaller than in either Greater Canada or Bar-headed, so if a Canada Goose is involved at all (and not a Barnacle Goose), then a Lesser rather than a Greater Canada Goose, in my opinion.
Groet,
Gert-Jan Caspers

laatvlieger

#5
Citeer
CiteerI think it is much more likely that it is Canada x Barheaded goose;
because Barnacle x Barheaded goose hybrids show a dark breast, in most cases very clearly , only rarely this is not so obvious. But it seems to be allways there in Barnacle x barheaded goose

Wouldn't you expect a Canada x Bar-headed hybrid to be brown, instead of grey? After all, Canada x Barnacle hybrids and Bar-headed x Greylag hybrids are more or less brown, so brown appears to be dominant over grey in brown x grey crosses.

Also, the bill of this bird is smaller than in either Greater Canada or Bar-headed, so if a Canada Goose is involved at all (and not a Barnacle Goose), then a Lesser rather than a Greater Canada Goose, in my opinion.
Actually you can see a lot of brown feathers in this hybrid. Lesser canada might be an option. But barnacle isn't in my opinion. For the same reasons Jörn already mentioned.

Apart from that the reason why Bar-headed must be one of the parents is because this goose has yellow to orange legs, has got some yellow on the beak as well, it's got grey flightfeathers and most important you see a small black line from the crown reaching towards the eye. This is typical for Bar headed.

The black neck and head leaves you with Brant s.l. (white bellied, black bellied, grey belied, and black),  Canada goose s.l. and barnacle goose. Brant does not seem to be reasonable (for some reason I've never seen a hybrid of Brant, do they actually occur? And what does this look like?), barnacle not because this bird lacks the sharp line between dark neck and lighter belly. So only a canada goose might be one of the other parents to my opinion.

Wheter this should be greater or Lesser is something I don't dare to say. Especially because most of these hybrids occur in captivity and speciesborders are not that fine in these circumstances.
Groet,

Wouter Teunissen


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