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Several colour mutations appear under
varying degrees of dilution from one to another and also retain a red dark eye
in adults, which, altogether with the naturally brown melanin does not help in
identification. I will try to summarize the present
knowledge and will type in capital letters the name used in |
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Among the colour mutations with a
melanin reduction, the FALLOW mutation (always autosomal recessive) can appear
under different degrees of reduction in pigment, which results in four possible types regarding
to the melanin appearance: grey, grey-brown, brown or pale brown.Two of them are identified in Bourkes.
Both having autosomal recessive inheritance of course. |
May 2004 Following MUTAVI
research to standardize the names at an international level
: |
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click on the photos to enlarge them photos Alain Campagne |
FALLOW A light reduction of the melanin into dark brown, slightly more reduced in females, usually called FALLOW in Europe, classified under BRONZE FALLOW in the international system. The eyes are dark red, the bill is horn and brown colour, legs pink and nails light brown. It looks slightly paler with less contrasting colours than the wild type, females being less coloured than males. |
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click on the photos to enlarge them photos Alain Campagne |
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click on the photo to enlarge it photo Alain Campagne |
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click on the photos to enlarge them
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photos Athol
Shelton (Australia) |
RECESIVE
PIED |
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click on the photos to enlarge them photos Alain Campagne |
The
international name is OPALINE, maybe OPALINE ROSE could sound easier to use.
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click on the photos to enlarge them photo Alain Campagne |
The lutino gene removes 99%
of eumelanin, turning these areas to white. That reveals the yellow and pink
psittacin pigments areas which are enhanced. Eyes red, legs flesh colour. But even if the bird can look as
pink as yellow the name LUTINO is the right one to be used and is agreed
overall. Lutino is sex-linked inherited in most of the species, and
that is true for the well- known Lutino Bourke |
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click on the photo to enlarge it photo Julie Seatter (New Zealand) |
A true CINNAMON cannot produce any black
or grey in any colour shade, the melanin appearing brown. The chick’s dark red
eye darkens quickly. The yellow pigments on the back are noticeable here
with light brown and cream markings, the general colour is more brown in the
cinnamon than in a Bronze Fallow
. The main difference being that the cinnamon is always sex-linked
inherited. |
click here to go to the combined mutations |