I had a call that the elevator was chirping. When I got in the overhead I found 2 nests of baby birds built into the missing brick that formed a lattice work that was screened on the inside that made up the hoist way ventilation. I went to the building office with a big can of WD40 and my lighter I told the women about the baby birds and my plan to torch them up!!!!! You should of heard them begging me not to hurt those little babies. I cant help myself sometimes.