The available colors
Cuckoo
Plumage in general on the color black is drawn a clear blue strikethrough not too precise, slightly curved and arranged with a regular alternation of the whole pen. Spine regularly crossed the pen.
Duvet must submit a strikethrough regular as the rest of the plumage.
Beak whitish gray; admitted flesh-colored. Tarsi gray with whitish gray haze.
Defects: drawing sparrow strongly leached; without drawing on the feathers of the tail; very black or white on sickle and flight feathers; white feathers; rust; traces floury.