Hall of Shame

The following pictures represent a sampling of nest boxes that are unsuitable for bluebird habitation.  
Before reading the descriptions of each box below each picture, see if you spot the box problems.

Image 14

Image 14 of 14

--- Montsberg - enlarged hole on fence post filled with House Wren twigs --- trees and fence posts are predator highways. --- Raccoons, Red and Grey Squirrels, Weasels, Deer Mice have easy access