Listen to my tale of woe currently running between a squirrel and me. It begins before this summer. One fine morning, I was startled to see our bathroom window sill and the floor straight below that was full of leaves, hay sticks etc., I watched and found that it's work of a squirrel. It was trying to build a nest. Next day also the same thing happened - the squirrel putting things in the sill and half of it falling down. So I kept a thin cardboard to safe guard it.Whenever a strong wind strikes, the card board falls off. I had to put it back.