Passing Cows - a wee story part two

Simon indicates and we turn onto a narrow sealed road heading into the hills. The first drops of rain burst on the windscreen. I look up at the sky. “I’m not sure the picnic is going to work.”
Simon wrinkles his nose. “Wonder if that farmer is pleased? People always say, the farmers will be pleased when it rains.”
The hills press in towards the road, squeezing it between the folds of the land. They are a lush green. Maybe the rain here is not so surprising. The colour in the long grass and the trees is even more brilliant against the blackboard sky. We drive around the end of one hill and head down into a gully. The ground on either side of the road starts to flatten out.
On the side of the road is a yellow, diamond, warning sign with the silhouette of a cow. There are no cows to be seen. The road is lined with old silver birches and willows beside wire and worn wood fences. Their leaves are hanging like lace curtains for the privacy of the farmland against the city traffic. We turn another corner.
The curtains are gone.
There are cows all over the road.
Simon rams the brake pedal hard.