Everytime we drive into the carport, open or close the front door, the mother bird flies away. It makes me wonder why she chose the top of our exterior light for a nest. For warmth? Unlikely, since the energy-saver bulb doesn't give off much heat, especially since we rarely turn that light on. I do vaguely remember seeing a nature doc where some small creatures (hummingbirds, I think) nested near scary predators because they frightened other predators away. Perhaps the same logic applies here.
She doesn't fly far, usually sitting in the vines above the backyard gate, puffing up and singing presumably to distract us from her nest. The nest is so high up that until today I couldn't even tell if there were any eggs in it. Now I can see that there were eggs, and they've hatched, giving birth to some adorable baby birds. (Adorable, ugly and freakish-looking, same thing).