So How Are the Bluebirds Doing?

Following the horrible cold early spring weather, the Tree Swallows and the Eastern Bluebirds nesting in our yard both abandonned their eggs and switched boxes. So how are things working out in their new homes? Happily, things seem to be fine. The Bluebirds are far less demonstrative than the swallows, but here's Mr B. looking to deliver somthing into the house. I could sneak a look of course, but so long food is being delivered and the birds are coming in and out I really don't like to disturb them.