Camouflage

[poliphilo]

I looked out the window and the field seemed to be empty. I looked harder and spotted a solitary horse- blending into its background but betrayed by its bulk. I looked even harder and saw that in fact all six of them were there, standing together against the hedge.

You'd not think a big thing like a horse could make itself invisible but place its black coat with flashes of white against a gappy hedge and it becomes remarkably difficult to see.