don't drill a hole unless you k now exactly were the bird is so you don't kill it.

i say there is a nest inside your wall what you should of done was to wait for the parents to come to see what kind of birds that they are.then waited for them to grow and leave that nest then you could of fixed the hole... you got to use common sense and told your mom or dad and let them take care of this bird problem....good luck

are you serious?

I found where it was by following the chirping and drilled a hole in the wall. when i finished the hole my drill was full of blood and i didn't hear any chirping. 5 minutes later i hear chirping again. Do you think its the same bird or a different one?