Northern Prairie Wildlife Research Center
A 2-foot piece of pipe, threaded at one end, is screwed into the flange (Figure 15). The size of the flange depends upon the pipe available. A satisfactory combination is a 1-inch floor flange into which is screwed a 2-foot length of 1-inch ID pipe. The 1-inch pipe telescopes into a 1 ½-inch ID pipe which is driven into the marsh bottom or ground with a post driver. A 5/16-inch hole is drilled 2 inches from the top end of the 1 ½-inch ID pipe and is threaded with a 3/8-inch N.C. tap and fitted with a 3/8-inch N.C. capscrew. This method of support can be used to place nest boxes either over water or land at many of the same sites previously recommended for wood or metal poles. A simpler method involves screwing the floor flange directly to a threaded pipe driven into the ground.
Figure 15. The pipe flange assembly offers an easy method of attaching nest boxes to supports. This method allows the boxes to be removed for maintenance.