i was reading this thread with interest. i have a situation where it appears i have 8 bluebirds who have hatched in one nest (thursday may 2, they were born). it may be 9, it's hard to tell. while monitoring the nest in late april i noticed what appeared to be eggs missing from the 3 that had been laid earlier in that week. the reality was that the eggs had been pushed down deeper into the nest and covered with pine straw. the mother kept coming back (may have been another species coming in and covering the egg with straw? i have seen no house sparrows here at all) and eventually she started laying again. turns out, there were 10 eggs total in this nest when she was done! i guess five from the first attempt and 5 after that. bottom line, 8 babies are in there now. i'm putting out meal worms twice a day and making sure there's lots of water nearby in the bird bath, and plenty of shelled sunflower seeds for the parents nearby in that feeder. anyone ever seen or heard of a situation like this?

I would like to invite you to join the bluebird nut cafe forum. It is much more active than this site and we have many veteran bluebirders that can give quick answers. Check us out! http://bluebirdnutcafe.yuku.com/

Relax she knows what she is doing. Sometimes the female will skip a day and then lay more eggs or maybe she is done. When she is done laying she will start to incubate full time which is not necessarily 24 hrs a day. They know what to do even without our help! LOL Cathy

Lydia 1959...As far as it's known, from decades of research by the PMCA and other organizations, the Purple Martins in the eastern half of the U.S. nest only in man-made cavities, and near human activity. Since the times before Columbus they have "imprinted" on humans. The eastern Native Americans lured them to their villages and gardens by setting natural gourds on sticks and dead trees. They knew when the Purple Martins were near, the flying insects were kept at bay. There is a small scattering of PMs on the west coast, and they seem to be nesting in single family groups around piers. There was a lot of excitement when a colony was discovered nesting in drainage pipes under highway overpasses around the Sacramento area. Still, for the vase majority of the Purple Martins, and the entire eastern population, it's man made housing. You can see the problem since fewer and fewer people are offering, and safely managing, housing for them. The PMs, along with our native blue birds, started declining in the 1950s and were fast approaching endangered status. The main causes were lack of housing being offered to them, loss of wooden fence posts in the case of the blue birds, and the explosion of the imported, non-native English House Sparrow that will kill/destroy any cavity nester, its eggs and its chicks, that it can find...PMs, bluebirds, chickadees, woodpeckers, nuthatches, etc. all fall prey to these non-natives. So, loss of habitat, explosive numbers of non-native competitors, and a lack of well-managed housing not being offered is the main culprits of the decline of our native cavity nesters. I wish you could come visit. I sit under the feeder tree each morning with my tea and listen to the beautiful chatter, chortles, and songs of the PMs. They're here for such a short time, but I try to enjoy them enough to last the rest of the year. They travel to and from southern Brazil each year to raise their families. They come back to the same colony each year. They are magical!