Pink opaline-fallow (R-52)
Description: I was allowed to take this pictures in de aviary of Van den Berg (Holland). The most striking aspect is the nice solid pink colour of the plumage of this colour variety. The back and rump are pink. That we see also in the rose opaline Bourke. But the colour of the opaline-fallow combination is more uniform. The rose colour of the back and part of the wings is not mixed up with dark feathers. Also the head and the upper tail feathers are pink. The flights are much darker than expected. This is a characteristic of a male. The wings of the fallow male have more eumelanin than the wings of the fallow hen. The wings of a rose opaline are dark. Combination of this two characteristics gives the dark flight feathers. This is a male. The influence of the fallow factor is clearly seen in the horn coloured nostrils and beak, the flesh coloured legs and the horn coloured nails. The influence of the opaline factor is seen in the broad under wing stripe visible in the flights. The pink colour is coming from the rose opaline, who was used to develop this variety.
The second picture gives a better impression of the red eyes and the nice uniform pink colour of the breast. The pink opaline-fallow is a very nice example of the red series of the Bourke's parakeet. A lot fanciers in Holland and Germany are breeding them.
Development: This colour variety is developed from the combination of the rose opaline and the sand coloured brown fallow. The contribution of the opaline factor is the other distribution of the melanin, the loss of melanin in the back and part of the wings, the reduction of the melanin in the breast belly and the head. The contribution of the fallow factor is the reduction of melanin in the whole plumage, eyes and horny parts. This reduction gives way to the red psittacine pigment that is found in the rose opaline. The overall colour of the plumage becomes reddish pink, with exception of the primaries. In the book of H.P.M. Zoomer: Neophema's en hun kleurmutaties, (1987, pg 86) we can see clearly that in that time the combination was not so solid pink as today. A remnant of melanin , little stripings are seen in the whole back, head and breast. Careful selection brought this beautiful pink bird.
Name giving: Name giving of this colour variety is an easy task. First: the colour of this variety: pink. This colour is so predominate in the whole plumage that we cannot expect another name. The colour name is followed by the names of the two mutation factors that come together in this variety: the opalin factor and the fallow factor.