Installed several of these at my girls house , the dove are dumb as dirt , and will nest anywhere , plus they are ver dirty . Spent a weekend doing community service by killing all the mockingbirds in the area with a pellet gun . Everybody sleeps better now . I hate mockingbirds with every fiber of my existence , and try to wing a few , so they cant get away from the neighborhood cats . Found a few piles of feathers and ” scraps ” in the alley .