I second all Jane's thoughts. If you can be prepared, bluebirding is an extremely rewarding experience. Many of us(correction: MOST of us) have had to deal with house sparrows. I can't tell you how many people I've known who, in the first year hosting bluebirds they have success, and for some reason, the house sparrows become a bigger problem in the second year, and people are taken by surprise (or shock) when the house sparrows kill the male in the box, or the female as she incubates eggs, or they smash unattended eggs, or toss the eggs out. In my first experience, a male house sparrow killed 6 newborn hatchlings by pecking them on the head. So if you decide to proceed, just be prepared. Bet's web site, www.sialis.org is a wonderful resource, and we will be here if you need us. Another option is to add hole reducers and host chickadees, if they are in your area. The proper hole reducer will prevent house sparrows from entering. You might want to read up on that at the website linked below. P.S. The little round wooden thing that many bluebird nestboxes come with (some people call them "predator guards") which extends the entrance does not protect anything from predators. BlueBars Here is a link that might be useful: http://www.sialis.org/

This is excatly what happened to me, as I stated above, although the nest I found the bumble bee in wasn't inhabited by Dees, at least not yet, but there was some nesting material inside, so one of my backyard birds had started getting ready but most likely abandoned it due to the bee. I know how you felt, it was scary, not knowing where the bee was hiding or whether or not it would try to sting me. I'm just glad that you got to the bottom of it and that nobody was hurt in the process. Linda

I would definitely give them 21 full days before deciding they were infertile. I did see that happen one time, through in an in-box nest cam that belongs to my friend. Three eggs laid and the female started incubating, or at least we assumed she was since she was staying in the box. We had a 3 day cold snap soon after the eggs were laid. On the 21st day I WATCHED one egg hatch! I could not believe it. The female removed one of the remaining two and my friend removed the other about 3 days later (it was infertile). That one little baby blue had a big nest all to herself and she fledged safely, right on time. 18 days is unusual but Jane mentioned the incubation thing, when it actually starts, and that can make the difference. Good luck and keep us posted.

Thanks everyone! I really don't think the male was just being scarce. I had been watching this pair for a week and a half before they started laying eggs. I would always see them together and I would always see both of them. If the female was in the nestbox, Dad sat outside watching. For all four eggs (being laid) Dad was there. If I went near the box I got scolded by both the male and the female. Then that one day as I was watching Mom just acted funny and that was when I realized I hadn't seen the male. Today was day five of not seeing him. I realized I could have missed him when watching but I really think if he had been around when I went down there he would of scolded me too, not just the mom. Now an update from today. I was watching and I saw a male BB! Watched them for a LONG time, lots and lots of wing waving going on by both but mostly the male. Mom would go in the nestbox, peek back out and then fly to the male who was in a tree near it, then she would go back in. She did stay in after awhile also and the male went to the nestbox at one point and peeked in. I went down during this and set some crickets out. Mom immediately went down to eat, male just watched and wing waved. When I went down there mom scolded me, the male did not. I think this is a new male but I guess I won't know for sure unless the eggs hatch and I find out if he feeds them or not, either that or if he gets her to start a new nest. What do you think?? I am going to post this question in a new thread too as I am curious what everyone thinks as to if this is a new male or not. Does wing waving happen during incubation by an established couple?? Donna