Who doesn't love these little Pygmy Nuthatches! Got a call about one falling out of its nest...then there was two....then there was three! They were getting too big for the tiny cavity the parents had chosen which was right in the crook of a split tree trunk. This was an excellent example of how you can renest some babies and continue to keep a family of birds together. We got an appropriate sized box for this kind of bird, installed a metal edging for predator protection around the hole, and then got it up on the tree. Now that was challenging, and we had some much needed help by a crew of guys with a really tall ladder (Thanks, you know who you are!). And voila' we had a new home for 6 baby nuthatches, and mom and pop took right to it and began feeding their crew. Let's hope they all make it!
The trick to renesting is keeping the parents around until its done. That means leaving the babies there and making noise so the parents do not give up. It only takes a few minutes for some birds to give up - especially if their tree or limb has been actually taken down (summer is never a good time to trim trees!!!). Crying babies though will keep mom and pop around, have someone else keep them in a box and outside where they can be heard. Or just put the box up temporarily while you get a real box together. Screw the new box into the tree next to the old site, and put all babies - those that have fallen and any still in the cavity - into the new box. New box should have some ash bark or dried grasses in it (don't use hay, pine or cedar bark, or pine needles). Make sure new box has horizontal grooves up the insides so the babies can climb out. Get away as soon as possible so the family can settle down and reunite. (You can also wire in a wicker basket for an open nest type. Cover the wire with duct tape so it can be seen by birds and not hurt them). Anyone can do this!
Its ideal when families can be kept together....little birds learn so much from their parents, like what kind of food to eat, where to find it, how to avoid predators, language skills for their flock, and so much more. We simply cannot replicate what mom and pop birds do in the wild with our rescues...its just not the same.
If you know you have to take a tree or limb down, check for nests. Prepare to replace the nest or cavity BEFORE you take the limb or tree down. It does take planning, but it is the ethical and fair thing to do.
photo by Jim Sedgewick, Wikimedia