Recently I was preparing an area for planting, so dug up a lot of rocks and stones. These are a variety of sizes and shapes, mostly between 5cm and 30cm. So now I have a large pile of rocks.
I would like to do something with these rocks, to benefit wildlife in my garden. So how should I arrange them? Better as one big pile, or several smaller piles? Or maybe build a dry stone wall, or other structure? And whereabouts in the garden should I put them?
And what sort of wildlife could it attract? Specifically in Scotland.