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(These numbers will vary depending on who's data you use)
| NESTING BIRDS |
| Species |
Hole Size |
Height Above Ground |
| Bluebird |
1¼" - 1½" |
5' - 10' |
| Chickadee |
1 1/8" |
6' - 15' |
| Finch |
2" |
8' - 12' |
| Flycatcher |
1¾" |
6' - 20' |
| Nuthatch |
1¼" |
5' - 20' |
| Sparrow |
1¼" |
10' - 20' |
| Starling |
2" |
10' - 25' |
| Swallow |
1½" |
5' - 15' |
| Titmice |
1¼" |
6' - 15' |
| Warbler |
1 1/8" - 1¼" |
4' - 8' |
| Woodpecker |
1¼" - 1½" (MOST) |
10' - 20' |
| Wren |
1" - 1¼" |
5' - 10' |
NOTE:
The most common hole size is 1¼"
This makes a good all-around entrance hole size selection if you have no preference !
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