You're more than welcome!Thank you @Alexandra33 for that more detailed response. I didn't have time to go into it as deeply at the moment. I agree with you wholeheartedly. I don't believe the troublemakers are wrens at all, but we'll see if the OP posts back.

I suppose anything is possible, but this behavior doesn't seem consistent with that of wrens. A response from the OP is greatly anticipated.

~Alex