Red suffused edged Bourke (R-6)
Description: This picture is made in the aviary of Besters. He had in 2000 some of this beautiful birds. The photo shows a red suffused Bourke's cock. The eyes are dark. Beak and toenails are black. In the horny parts no loss of melanin is found. In the plumage less melanin is left. Only the edges of the wing feathers a showing a remnant of melanin. The head is red. The frontal band is white. The cheeks are grey. Wing-and tail feathers are grey white. They have a dark brown feather shaft. The tips of the wing feathers are brown. In the tail feathers all melanin is gone. Belly and breast are rose. Wings, back, rump and upper tail coverts are yellow. A red suffusion is seen on the yellow upper back and shoulders. This is the most important characteristic of this variety.
Development: Not much is known about the development. The first edged Bourke had already a mixture of yellow and red pigment on the wings and the back. A bright red suffusion was a new interesting development. In the formerly development of the edged Bourke a total loss of the eumelanin in the plumage was intended. Most specimen were yellow. Caspers (Holland) bred some birds with this red suffusion. The red suffusion starts with the hind neck, continuous in the back and wings. This gives the bird a special charm. The same colour pattern, bright yellow with a red suffusion we see sometimes in the lutino Bourke. It is not clear in which way this colour variety was developed. The only thing I know was that a red pastel was used in the development. This variety was called apricot by the first breeder. Later this apricot was sold to Germany. The number was increased by some breeders.
Name giving: This Bourke is strong edged. Edged is a perfect translation of the Dutch name: gezoomd. Edged refers to the characteristics of the eumelanin.The yellow ground colour with a red suffusion looks like an apricot. The breeders recognise them as a special variety. The name aprocot is a fantasy name. More precise is the name red suffused. This name refers to the characteristic of the red psittacine pigment. The term suffused is used in several other species. People know what this looks like.
The combination of this two: red suffused edged Bourke seems to be a proper name. This variety of the Bourke is placed in the red series because the red suffusion is most characteristic element compared with the yellow edged Bourke.