One of the major impacts of people is to remove not only cover,
but nest sites and good insect-producing habitats. For example,
snags, downed logs, rock piles, etc. are always 'cleaned up'.
Soooo, I've wondered, what if every bird enthusiast hauled a
snag or *big* dead log into their yard, or made a nice brush
or rock pile? Would the fire danger be too great? How about
the resulting rat population? (I doubt if you could persuade
homeowners that a bushy-tailed woodrat was different than a
black rat.) What if a snag fell over and killed someonw? If
the idea caught on, what about the impact of all those snags
being removed from forests and put in urban areas?

Nah. It would never fly. People are generally happier watching
wildlife on TV from the comfort and safety of the couch or
making brief forays to visit it.

Kelly