Holcombee: What kind of wren? I'm guessing maybe Carolina? I doubt she would fix it, but I have no real reason to say that. It just seems to me from observation that birds are more fixated on feeding the babies than anything. I don't know how she'd be able to fix the next from the top with the babies in it. I also wonder if she would notice that the bottom of the nest was in need of repair and/or have the sense to do anything about it. Having said all of that it is merely speculation. If the babies do fall out, the parents will still attempt to care for them if they are healthy, but they are likely to become the prey of another bird or cat or night predator. I guess if you do decide to shore up the nest somehow, you should make a solid plan and have a helper ready to hand things to you or run for something you may need. The parents are likely to be somewhat upset, and you want to be able to work as quickly as possible. I have used a deep bucket in which to carefully place the babies (I pick up the whole nest and babies by scooping it up with two hands). I cover the bucket with a towel so that the babies do not become prey or get overheated by the sun. Then I have fashioned nests out of similar materials making sure to try to work the materials into a cup by putting my thumbs into the middle. I just try to get it as close to the old nest in shape and materials as possible. Once I have the new nest in place, I then replace the babies carefully. In the cases that I have done this, they have always been in a nest box, so it is easier to be sure the babies will stay put afterward. The real danger here is if the babies are of an age that they could jump ship and you cause them to fledge prematurely out of fear. Can you tell about how close they are to fledging? Are the eyes open, do they permanent feathers yet? If they are close to fledging, I'd leave nature to her work. This is not an ideal solution, and I'd only use it if absolutely necessary. I think if you are able to add anything under the nest, that would be the best thing. This is one of the reasons that there is such mortality rates in songbirds under one year. Good luck and keep us posted.

Well more bad news. I looked through the hole and saw no activity and heard none so I opened and saw the last baby, previously alive, had died. I have no idea what happened to him. No trauma from what I could see and this afternoon I definitely saw him moving around in the hole. What in te world happened to my little baby? He was supposed to fly free today. I don't know that I want to clean out the house and try for another now. Mommy is out there flying around with her newly chosen mate and I wonder if she is heartbroken as I am? Again, what in the world happened to this last baby?

Can it hop? Is it feathered out or is it still pink and naked looking? If it can hop and is feathered and there are bushes nearby the parents will guide it to a safe spot they will feed it. If it is in a dangerous spot like near the street or on the sidewalk place it on low brances or in a bush as near to the nest as you can find. Don't try to put it back in the nest or you may make the others jump out. If it is still kind of bald and no where near being able to fly or hop around put it back in the nest. The parents will feed it, birds do not smell well at all.

Just remove the nest. The female will most likely not come back and reuse the same nest since it failed.