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 Bird House Size Guide - Ornithologically Correct Nest Boxes for Wild Birds
 

Bird House Guide
Size Specifications

Photo of brightly colored plastic rulers

There are several ways to attract birds to your backyard ... the most important are food, water and shelter.

When it comes to shelter providing a bird house elevates backyard bird watching to a higher level.  What can be more fun that watching a new family of baby birds being raised?

Before you buy or build a bird house be sure to check the bird house size guide below.  If you are trying to attract a certain species the chart will give you the appropriate specifications for the "housing" they are looking for.  Don't miss the 10 Most Important Features of a Good Bird House.

For some good bird house choices just click on the Bird link below for one the meets the criteria required for that particular bird.

 

Bird House Size Guide

Note:  All bird house size guide specifications can be altered to plus 1/2" (inch) ... or minus 1/4" (inch) except the entrance hole size.

SpeciesHouse FloorHouse Depth Hole Above FloorDiameter of HoleHeight Above Ground
Click on Bird to
see House Design
Bluebird - Eastern 5" x 5"9"7"1-1/2"4' to 10'
Bluebird - Mountain6" x 6"9"7"1-9/16"4' to 10'
Bluebird - Western5.5" x 5.5"9"7"1-9/16"4' to 10'
Chickadee4" x 4"8" to 10"6" to 8"1-1/8" to 1-1/2"6' to 15'
Duck - Wood10" x 18"10" to 24"12" to 16"3" to 4"10' to 20'
Duck - Bufflehead10" x 10"18" to 20"16" to 18"2-1/2" to 3"5' to 15'
Finch - House6" x 6"6"4"2"8' to 12'
Flycatcher - Crested6" x 6"8" to 10"6" to 8"1-1/2" to 2-1/2"8 to 20'
Hawk -
Red-tailed
24" x 24"
platform
- - -- - -- - -- - -
Kestral - American(*1)8" x 8"16" to 18"13 to 15"3"15' to 20'
Nuthatch -
Red-breasted
4" x 4"8" to 10"6" to 8"1-1/8" to 1-1/2"12' to 20'
Nuthatch -
White-breasted
4" x 4"9" to 11"7" to 9"1-1/8" to 1-1/2"12' to 20'
Osprey48" x 48"
Platform
- - - - - - - - - - - -
Owl - Barn18" x 20"15" to 18"4"6" to 8"12' to 18'
Owl - Barred14" x 14"26" to 28"21" to 23"6" to 8"15' to 30'
Owl -
Great Horned
24" x 24"
platform
- - -- - -- - -- - -
Owl - Saw-whet6" x 6"10" to 12"8" to 10"2-1/2" to 4"12' to 20'
Owl - Screech8" x 8"12" to 15"9" to 12"2-1/2" to 4"10' to 30'
Phoebe - Eastern6" x 6"6"nesting
shelf
nesting
shelf
6' to 15'
Purple Martin6" x 6"6"2"2 to 2-1/2"10' to 20'
Robin - American6" to 8"8"nesting
shelf
nesting
shelf
6' to 15'
Sapsucker -
Yellow-bellied
5" x 5"12" to 15"9" to 12"1-1/2"10' to 20'
Sparrow - House4" x 4"
to
5" x 5"
9" to 12"6" to 7"1-3/16" to 2" - - -
Swallow - Barn6" x 6"6" nesting shelfnesting shelf8' to 12'
Swallow - Tree5" x 5"6"1"to 5"1-1/4" to 1-1/2"10' to 12'
Swallow - Violet-green5" x 5"6"1" to 5"1-1/4" to 1-1/2"10' to 12'
Titmouse - Tufted4" x 4"8" x 10"6" to8"1-3/8" to 1-1/2"6' to 15'
Warbler -
Prothonotary
5" x 5"6"4" to 5"1-1/8" 4' to 8'
Woodpecker - Downy4" x 4"9" to 12"6" to 8"1-1/4" to 1/12"6' to 20'
Woodpecker - Flicker7" x 7"16" to 18"14" to 16"2" to 3"6' to 20'
Woodpecker - Hairy6" x 6"12" x 15"9" to 12"1-1/2" to 2-3/4"12' to 20'
Woodpecker -
Pileated
8" x 8"16" to 24"12" to 20"3" x 4"15' to 25'
Woodpecker -
Red-bellied
6" x 6"12" to 15"9" to 12"2-1/2"10' to 20'
Woodpecker -
Red-headed
6" x 6"12" x 15"9" to 12"1-3/4" to 2-3/4"12' to 20'
Wren - Bewick's4" x 4"6" to 8"4" to 6"1-1/4" to 1-1/2"6' to 10'
Wren - Carolina4" x 4"6" to 8"4" to 6"1-1/2"6' to 10'
Wren - House4" x 4"6" to 8"4" to 6"1" to 1-1/2"6' to 10'

(*1) American Kestral was formerly known as a Sparrow Hawk
Cute drawing of bird houses hanging on a tree branch
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