Normally these days Shepherds use a leather harness fitted with a coloured crayon over the tup's breastbone but these things are cumbersome and must be uncomfortable. I prefer to use the old method, I mix up coloured powders chalk with cooking oil then apply it between the tup's forelegs with a stick. I was too enthusiastic. That's why it looks like a bloodbath.
Next time, in a couple of weeks I'll change the colour and be a bit more careful.