Abandoned building as wildlife habitat, not homeless shelters.

   Many building that are abandoned attract homeless wino's and also act as gang hideouts. If the windows are broken or removed this keeps the building from retaining heat for people but the roof and walls provide shelter for animals like Owls, Foxes, Coyotes etc. Also planting creepers on the walls of the building like English and Boston Ivy gives habitat for small birds to nest on the outside of the building....besides being aesthetic.