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The size of both the entrance and nest
hole itself is very crucial in determining which birds use
it. Since different species are attracted to nest hole of
different dimension follow the recommended sizes listed
below and the appropriate species will use your nest hole.
Type Birds Entrance size Comments
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Type |
Birds |
Entrance size |
Comment |
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A |
Titmice
Black-capped chickadee
House Wren,
House Sparrow
Downy Woodpecker
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11/8" - 11/4" |
4' - 12'' above ground and up |
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B |
Titmice
Carolina chickadee Titmouse,
Nuthatches,
Bluebirds,
House Sparrow
Tree Swallow,
European Sterling,
Yellow-Bellied Sapsucker
Black-Backed Three-Toed Woodpecker |
13/8" - 11/2"
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4' - 20' above ground and up |
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C |
Purple Martin
Tree Swallow,
European Sterling,
Common Screech-Owl
Red-Bellied Woodpecker,
Red-Headed Woodpecker
Northern Three-Toed Woodpecker |
2" |
12' - 30' above ground and up |
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D |
Wood Duck
Pileated Woodpecker |
4" |
4' - 30' above ground and up |
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(Based on: Eastern Birds' Nests;
Nests, Eggs, and Nestling of North American Birds and others)
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