Hole Size Box Height
Chickadee 1.25″ 4-12ft
Swallow 1.5″ 8-12ft
Sparrow 1.5″ 4-12ft
Downey woodpecker 1.25″ 5-15ft
Pileated woodpecker 3″ 15-25ft
Nuthatch 1.25″ 5-15ft
House Finch 2″ 8-12ft
Flicker 2″ 6-20ft
Wren 1.25 5-10ft
Bluebird 1.5 4-6ft
Purple Martin 2″ 10-15ft
Owls (pigmy, Saw-wet) 2.5″ 12-30ft
House mounted on a post
![attachment-3](https://driftwoodbay.com/wordpress/wp-content/uploads/2017/02/attachment-3-176x300.jpg)
House with hook at top or at back.
L Bracket on bottom and into tree or structure.
![attachment-2_ink_li](https://driftwoodbay.com/wordpress/wp-content/uploads/2017/02/attachment-2_Ink_LI-166x300.jpg)