House House Hole
Diameter Height
Species
floor depth above
of above
(inches) (inches) Floor
Hole Ground
(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
(1+ sides open) 6-15
Barn Swallow
6 X 6 6
(1+ sides open) 8-12
Phoebe
6 X 6 6
(1+ 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
