[4X4]

One of my projects (a house under construction) has been stalled for a few weeks. The lack of activity created the right environment for a bird to plop a nest up in the trusses. I think it has either eggs or babies in there because when I got close, it didn't fly away. I'm no pro on birds, but in my experience, when you get too close to a bird, it leaves. I'm assuming that it stayed to protect whatever is in the nest.

Anyway, what should I do about this? Will the mother abandon the babies if I shoo her away and then move the nest myself? Where should I put it? The drywallers will be starting next week, so it's last call for Tweety.

Suggestions? Hookers and blow? Welcome my new overlords?

FTR, I don't know what kind of bird it is. The nest is about the size of a cereal bowl and the back of the bird is brownish black. Bigger than a sparrow, smaller than a robin.
Also, maybe notable, pigeons have been frequenting the place as well. I know they'll just fly away when the drywalling starts. Just mentioning it in case that fact is useful in determining what kind of bird is in the nest.
If it is necessary, I can go take a picture and post it.