Thanks for the reminder Ray. While we never let our cat outdoors, a lot of the neighbors do. I have a good sized (8") wobbling stovepipe guard and have never had a cat, raccoon, or snake get into one of my boxes. The conduit pipe and good guard are extremely important.

Hello, I have a problem with my beloved bluebirds I am hoping someone can help me with. We had a successful fledging a few weeks ago and then they came back and built another nest. Laid four eggs. I went out and one was destroyed and on the ground. The other three were in the very bottom of the nest making it hard for mama to even know they were there. A few days later she started building a nest on top of that nest. When I saw it, I pulled the other nest up on top of it so she could see the three eggs. Now she has laid two new eggs so far in with the old ones. And the nest is very high now and close to the hole. What will happen with old and new eggs in there? And should I try to squish the nest down from the hole more?

Very odd things happening with my houses this year. I had bluebirds in one house that laid 5 eggs. For the most part I try to stay away so they don't get spooked. In this case the next time I checked there was one fledgling that I saw but he didn't seem ready to fly away yet. But when I checked 2 days later there were no babies or eggs. The nest was empty. This box was protected with the mesh on the opening. I'm hoping time just flew by and the brood hatched and fledged in my absence! Will the parents start a new brood in the same nest or should I clean the box out for them to start over? I had another box that had activity, 5 eggs layed and a week later no eggs or babies. I fear they were killed since it was an old house from last year and it did not have the protective metal mesh at the opening. I have a nest nearby with the mesh protection. I kept checking and there was no activity or eggs. Then suddenly there was one egg!! I assumed the mom would lay more. I checked for 2 days, still only one egg. The third day the egg hatched with a tiny bald with a little fuzz baby bird. I kept watching from a distance and I did not see the male or female going into the house. I skipped looking inside the box today. I wanted to stay totally away. Tomorrow I will check again. I hope the little guy is okay.... Is it unusual for a female to lay only one egg? I'm thinking that perhaps the pair that were in the other box moved to this box when a predator got their other eggs..... Thus only one last egg to lay??? The box with the one egg is about 20 feet from the empty box. Perhaps this is part of that brood? Can the mom or dad move an egg or did she just lay it in a different box?? I have another box about 100 feet from that one protected with the mesh that some sparrows have taken over. They have built a nest and hang out in front of it on the mesh opening and on top of it but no eggs for well over a month. Perhaps they are the culprits that got the 5 bluebird eggs. Very strange that they built a nest and aren't using it. I know they will build several, one as a decoy or to give the female a choice, but I don't see that they've done that unless they are planning to take over the bluebird box. I will be keeping a watch on that....

It has happened to us too! Very puzzling!