Northern Prairie Wildlife Research Center
|Figure 19. Sometimes even the best plans for mounting nest boxes in trees can go awry. The above picture depicts the fate of one metal nest box that was placed in a tree that beavers had other ideas about and a wood box that was vandalized. Annual maintenance is the only way to assure your nest box will be avialable for use.|
In some areas, starlings and house sparrows may occupy boxes, making them unavailable to cavity-nesting ducks. Whenever this happens, it is advisable to promptly remove the nest and eggs. The starlings and house sparrows are the only songbirds which are not federally protected.
Again, all nest boxes must be maintained annually. The contents of each box must be cleaned out and fresh nesting material added.