A kind of telepathy....with a Crow

[Catherine]

Quote:I always hear any of those electronic noises which are meant for creatures. I don't want to risk buying a frequency noise-thing and then it driving me nuts. It would have to be inside the house too. If it were out in the shed it might be less troublesome for me.

I don't think I could hear them, but I think it bothered me. I hid them in a cupboard(unused) and later threw them out. They were my landlord's idea.

So any unused chimney would end up as a jackdaw nest. They would just keep filling it until it would hold a nest.
Your method of stopping them seems effective enough. Certainly it is cheaper that capping the chimney. They will give up when they realize that you are using your chimney regularly.

It was good of them to let you sleep at least one morning.