I love birds but know nothing about the outside variety. Needless to say, there's a family of birds in a nest on top of my outside light. There's no bulb in there, it's just an empty socket. The nest came in May sometime and about a week ago the babies hatched. One day before the babies came, I saw (perched on the side of the nest) what I believe was either an American Robin or a Wren. Not 100% sure though. Anyway, is it too late to set out something for them? Should I just leave them alone? I'm in an apartment and the stairwell is kind of close quarters with where my neighbor is. I'm afraid to disturb them too much, because I don't want to scare them away.