Yes, it is all bark really. The only other bird I thought could be possible was a Carolina Wren but I don't think so. We moved the house today after much though. We were at a loss what to do. The house has broken wood on the bottom, don't know how this happened but it was leaning where it was attached to the pole. I'm afraid it would not have made it safely with the birds inside. So, we made the decision to move the house gently to an area where it will have support, about 10-12 feet directly behind the pole, and pray. We have not gone out there today hoping that with piece and quite momma will not mind the move and brave coming back. We had no clue what else to do and felt this was the safest thing to give them a chance. At first I thought it was kind of silly that this bird was bring mulch into the house until I checked again and noticed the 6 eggs. Hopefully I'll get some pictures.

Bluebirds have many vocalizations. They sing, warble, "danger" call, even chirp for various reasons. During courtship they might both sing. I've heard the adults make baby sounds when they come for mealworms. I've heard the male sing very softly and quietly nearby for hours while the female is incubating eggs. I've heard a female call for her mate all day long at the top of the highest tree, after he went missing during a terrible hailstorm. As fledglings grow older, their calls change, and when fledging time is near, the parents call to them to encourage them as they tease them with food, and maybe even tell them where to fly to. It amazes me when I see a fledgling pop out on their very first flight, and make an immediate U-turn in mid-air up to the woods--how did they know to do that? I recently purchased a little recorder, and hope to be able to share some of these sounds someday, maybe to go along with some of the stunning photos many of you post here. If only that UPS truck would quiet its brakes! That screeeeech is piercing my ears! BlueBars

I really hope you don't "pick" off the male bluebird. How long are you waiting to see if the bb eggs hatch?? I have not heard of that many eggs not hatching.

Yes, I monitor a trail and one little bird started a third nesting within 4 days of her 2nd brood fledging. I know it is the same bird because she lays white eggs. Linda C