Good Morning: As most of you know, I have had a successful season of pairing a bluebird house on the same pole with a TRES house. Both “couples” successfully raised a group of babies which fledged about two weeks ago. My bluebird couple quickly built a new nest and have 5 eggs to tend to. The TRES house is empty. I had read that it is unusual for TRES to have more than one brood, so I wasn’t really expecting them to nest again. I have left the house undisturbed (other than cleaning out the nest) because I occasionally see the TRES flying around the house and even looking inside. I was wondering, do you think I should plug up the entrance to that house. . .or even remove it from the pole all together? I am afraid that it may draw “undesirables” near my bluebirds.