1.
Colour variants in dutch Heathsheep (Heideschaap) ; Variants colorés chez le Mouton Néerlandais des Landes de bruyère (Heideschaap)
2.
Variants colorés chez le Mouton Néerlandais des Landes de bruyère (Heideschaap)
Genetic formulas for the colour in the Texel, the Dutch and the Zwartbles sheep in the Netherlands
3.
A badger-face-like color variant in Texel and in Dutch sheep in the Netherlands