Lutino Bourke's Parakeet
Description: The pictures are made in the aviary of Hendrikse. It is a composition of two photos of the same hen. The head is white with a light suffusion of red pigment. The eye region is pure white. The eyes are red. The nostrils, beak and nails are horn coloured. The belly and breast are light rose. The flanks are white, just as the under tail coverts. The wings are yellow. There is a light suffusion of red on the wings. Primaries and tail are white. The back and wingcoverts are light yellow. In this picture the yellow colour on the wings and rump is light. This is because this Bourke is young, she is about four month old. After the first moult the psittacine colours will be much brighter.
Development: The lutino is born in Halsteren (Holland) from an old wildtype breeding couple in the aviary of Van Riet . He sold the new colour variety and the parents. In Holland the early development of the colour variety was done by Ockemuller and Postuma. The eumelanin in the plumage is lost totally. Only with the electron microscope some melanin grains are found but they are not visible without means. The eyes lost the melanin also. Because of the fact that eumelanin is missing the colour pigments come to full expression. This yellow colour variety has a lot yellow pigment in the feathers of wings and back. By the loss of dark pigment a true picture is given of the possession of yellow and red pigment in the plumage. There is a clearly visible separation of the red and the yellow colour. The dividing line lays between the hind neck and the upper back. This separation has to be very sharp. It will be great when all the red pigment is sorted out on the back and the wings. Selection to intensify the yellow and red colour is also possible. This will give a big contrast between red and yellow. A lot of lutino have to much red pigment in the coverts of the back and wings. Selection at this point is possible and needed. The ideal lutino is to me the lutino with a white head , white flights and tail, and an intensive yellow upper- and lower back, wings and rump, without red spots and a red front.
Name giving: The name of this colour variety is lutino. Luteus (Latin)= golden yellow. So it is a colour name like rose and yellow, referring to the colour of the wings and the back. The lutino is a bird in the yellow series. The second part of the name is derived from ino. Ino is the name for the characteristics of the melanin. The name lutino is composed of luteus and ino.