This was brood #2 for Mr. and Mrs. bluebird. Here you can see two have already hatched with the third working it's way out. There were 3 for a time, but one day when I went to check on them, only two were left. I'm thinking this late hatching one was probably the one that didn't make it. The just left the nest a couple of days ago. I hope to see them back soon. With the two broods this year, Mr. and Mrs. had 6 babies. I may have to get another nest box for next spring.