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Star Finch - Finch mutation

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Star Finch

Original image copyright: Ross Walker (Ohmi Finch)  近江フィンチ

Species: Star Finch コモンチョウ
Common names: Rufous-tailed finch, Red-tailed finch, Red-faced finch, Ruficauda finch, Queensland star finch (N. ruficauda), Western Australian star finch (N. r. clarescens)
Genus: Neochmia ruficauda
Mutation: Double-Factor ダブルファクター
Gender: Cock
Split ring number:  71
Born (day/month/year):  1/1/2018 (estimated)
DB item code: 46635
Notes
(for the bird pictured above): 
General mutation notes: I am still investigating the genetic make-up of this "Yellow Body" look-alike from Europe that they call "double-factor", but preliminary results suggest the two "factors" are Fawn and Pied. I have confirmed, beyond reasonable doubt, that Cinnamon (sex-linked) is not one of the factors. Also, when paired to a Normal split Fawn hen, both Fawn and Normal offspring were produced, suggesting Fawn (autosomal recessive) is one of the factors. Pied was mentioned by the importer and can be seen visually. I cannot see any pied in the offspring, so if present it must be autosomal recessive. Please contact me if you have any other information.

「ダブルファクター」と言うコモンチョウです。ダブルファクターはどう言うミューテーションかまだ判りませんが、多分シナモンが入っていないと思います。「イエローボデイ」のミューテーションとちょっと違うかもしれません。
General species notes: Forehead, sides of head, chin and beak: bright red; neck and upper back: grey-green to olive green; wings: grey-brown; belly: yellowish green; rump and central tail feathers: crimson. Red eyes, yellow legs and feet. Spots located on mask, chest and along the sides of the belly. Older birds tend to have more intense coloration and a greater number of spots. Race N. r. clarescens males have more extensive red on the head, brighter yellowish-green upperparts, yellowish breast and flanks. Juveniles are very similar to Crimson Finch juveniles; they are a dull olive-brown with their underparts being a lighter shade than their back, have a blackish bill, and have brown legs and feet.

Mutations include:

Pied:
(but pied feathers only tend to show on the head, wings, and tail);
yellow-faced or orange-headed (where the mask is yellow instead of red);

Isabel
(a lighter, more fawn version of the bird with the same markings, just in a lighter, browner tone) present in Europe, similar to the Australian cinnamon - sex-linked mutation;

Cinnamon (in Australia; green-brown upperparts, underparts paler and more green-buff, rump and uppertail coverts pink-mauve, but red face mask retained);

Fawn
(in Australia; upperparts pale fawn/cream, underparts pale buff-yellow, rump and uppertail coverts pale pink, eyes red, red face mask remains);
yellow-bodied (in Australia, upperparts and underparts yellow, red areas retained, eyes red);

Silver
(in South Africa; upperparts silver green-grey, underparts pale grey-green, red areas become pale orange-yellow while yellow is reduced in intensity in yellow-faced forms)
clear-head (total lack of red on the head, sexing must be done by DNA)

Data source: http://www.finchinfo.com/birds/finches/species/star_finch.php


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Site copyright: Dr Ross Walker, Shiga, Japan. The information contained on this website is provided as an educational resource.

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