September Blue

We haven't quite figured out what these bluebirds are doing checking out the box at this time of the year. We hadn't ever seen them around at this time. Lately, however, once or twice a day, there seem to be a small group of them that congregate in the garden, on the fence, on the box, on a post. Then one or more of them will fly up to the box and take a look inside. Trust me, the box is empty. This picture was taken on Tuesday, the last day of September. The following pictures are not as clear but you can find 3 blues in one and 4 blues in another. Click on the picture to make it larger.