Thanks Chris and Carol for the welcome. I’m a little jealous that you have bluebirds at your place. I live in a small town and have only seen them stop by to look in the birdhouse once on camera for the past two years. My brother and sister have them and they’re not too far away.
I noticed that too about the babies being crowded and with the hosp actions telling me they will still come in to kill in a 4” pvc, it gave me another reason to experiment with the 6” size. So far it is working great. The reason I went to pvc is that it is low maintenance and should last a long time. I have a 25 second or so video of the mother singing inside of the 6” birdhouse. I can’t be sure but it sounded like she approves 🙂
I’m in the process of checking out the Imgur photo site so maybe I can link something.
Thanks, Bill