John M, that's funny upside down lol. I used 4" pvc to keep the snakes and coons out of the boxes. Last year was the first spring for the 2 wood duck boxes and I watched a couple of pairs look these places over for several days, but I never saw them use the boxes. They would swim up to the boxes and around the boxes. Built mine from cuts from Cypress trees, the outside cut of these trees looks pretty natural.
Tracy
Last edited by TGW1; 12/27/1508:56 AM. Reason: sp
Do not judge me by the politicians in my City, State or Federal Government.
upside down lol. I used 4" pvc to keep the snakes and coons out of the boxes. Last year was the first spring for the 2 wood duck boxes and I watched a couple of pairs look these places over for several days, but I never saw them use the boxes. They would swim up to the boxes and around the boxes. Built mine from cuts from Cypress trees, the outside cut of these trees looks pretty natural. 
