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Nest Box Dimensions
Species
Floor of
Cavity
(inches)
Depth of 
Cavity
(inches)
Entrance 
Above 
Floor 
(inches)
Size of 
Entrance
(inches)
Height 
Above
Ground
(feet)
Habitat

American Kestrel/ Screech Owl

8x8
12-15
9-12
3
10-30
Click here
Black-capped Chickadee
4x4
8-10
6-8
1 1/8
5
Wooded areas
Eastern Bluebird
5x5
8
6
1 1/2
5
Open areas
House Wren
4x4
6-8
4-6
1 1/4
6-10
Brushy edges
Purple Martin*
6x6
6
1
2 1/2
10-20
Near water, in open fields
Squirrels
9x9
20
15
3
>10
Wooded areas
Tree Swallow
5x5
6
1-5
1 1/2
5
Open areas
Wood Duck
10x18
10-24
12-16
4
3 (above water)
Wetlands

* Purple Martins nest in groups in houses. Please click here for specific information.


New York Sea Grant I SUNY Oswego I Oswego, NY 13126
315-312-3042
Designed by Molly Thompson, Dune/Habitat Educator
mat36@cornell.edu