Build A Birdhouse

               Floor         Depth      Entrance     Diameter       Height 
 Species     of Cavity     of Cavity   above Floor  of Entrance  above Ground
              (inches)     (inches)     (inches)     (inches)      (feet)


Bluebird       5 X 5          8            6           1 1/2         5-10
Chickadee      4 X 4         8-10         6-8          1 1/8         6-15
Titmouse       4 X 4         8-10         6-8          1 1/4         6-15
Nuthatch       4 X 4         8-10         6-8          1 1/4        12-20
Bewick's Wren  4 X 4         6-8          4-6        1 - 1 1/4       6-10  
Carolina Wren  4 X 4         6-8          4-6          1 1/2         6-10
Purple Martin  6 X 6          6            2           2 1/2        10-15


Crested 
Flycatcher     6 X 6         8-10         6-8            2           8-20


Flicker        7 X 7        16-18        14-16         2 1/2         6-20


Red-Headed
Woodpecker     6 X 6        12-15         9-12           2          12-20


Downy
Woodpecker     4 X 4        9-12          6-8         1 1/4         6-20


Robin          6 X 8          8        (one or more sides open)      6-15
Barn Swallow   6 X 6          6        (one or more sides open)      8-12
Phoebe         6 X 6          6        (one or more sides open)      8-12
Screech Owl    8 X 8        12-15         9-12           3          10-30
Wood Duck     10 - 18       10-24        12-16           4          10-20