I am so very sorry to report that the new Martin houses are empty. This makes me so very sad. We've always had Purple Martins and now they are gone, I miss them. I am also feeling super guilty cause I let the old houses get in just disrepair. I am convinced that is why they did not return. They were afraid there would be nothing to return to.
This could be a lesson to us couldn't it...homes should always be a place to return.