We have one Audubon, and two of the Jack/Dan Finch boxes out of Bailey, NC. They're all poled & baffled. As we were unpacking last year, the new Audubon box was the first one we found, so it went up first. While it is a tad smaller than the Bailey boxes (to me it's less confusing than calling a BBird box a Finch box), we had two successful clutches last year. The Bailey box we put up last year ended up hosting Chickadees, but is in a less desirable location for Blues evidently. That's why this year we put up a third box, and it's a Bailey box - we'll see Who ends up Where, and in What box. I posted last year asking "is it the Box, or the Location they like?" and we're all not sure.... Good luck!!

I would want to know why too :( I am extremely sad, today the birdies are not there and part of their nest is on the floor and the mother is waiting on the tree as if they were coming back. I am so sad, I do not know what happened to them and other birds are with the mother there watching

There are some birds that lay their eggs in another birds nest. The Cuckoo, Cowbird, Whyda, Honeyguide and Black-headed Duck come to mind. "These birds, called brood parasites, lay their eggs in another bird's nest and let the other bird parents feed and raise their chicks. The "egg abandoner" is then free to mate again and lay more eggs in another nest. The cuckoo is the best known brood parasite and an expert in the art of cruel deception. Its strategy involves stealth, surprise and speed. The mother removes one egg laid by the host mother, lays her own and flies off with the host egg in her bill. The whole process takes barely ten seconds. Cuckoos parasitize the nests of a large variety of bird species and carefully mimic the colour and pattern of their own eggs to match that of their hosts. Each female cuckoo specializes on one particular host species. How the cuckoo manages to lay eggs to imitate each host's eggs so accurately is one of nature's main mysteries."

I agree with the squirrel nest - I have a lot of them and I've seen a squirrel running between them: A squirrel bustled up and down the trees at sunrise - it looked like it was checking the various nests to see who was awake and up. The trees are on top of the coastal bank overlooking Cape Cod Bay. Claire