Border Collie Herding Sheep

A black-and-white border collie moves low across a steep green hillside, keeping its attention on six sheep climbing ahead. The flock follows the slope between long dry-stone walls, with each animal caught at a slightly different step. Purple heather breaks through the grass in the foreground and continues across the distant moor beneath a clear, cloud-dotted sky.

Dark fur makes the dog easy to find among the greens, and its white ruff, paws and sweeping tail divide that shape into useful sections. Coarse wool and small changes in the sheep's head positions help separate a group that first looks quite similar. Beyond them, stacked stones, rocky ridges and scattered heather reward a closer look as the hillside recedes into the valley.