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Wild Bird Facts and Information
The hole size chart below is meant to be a
general guideline of how each species such as the blue bird prefer their hole size. Individual birds may use a hole slightly smaller or larger than the size listed, which is why we offer so many choices.
| Bird Species | Diameter of Hole | Height above Ground |
| (inches) | (feet) |
| Bluebird | 1-1/2" | 5-10 |
| Chickadee | 1-1/8" | 6-15 |
| Titmouse | 1-1/4" | 6-15 |
| Nuthatch | 1" - 1-1/4" | 6-10 |
| Bewick's Wren | 1-1/4" | 6-10 |
| Carolina Wren | 1-1/2" | 6-10 |
| Swallow | 1-1/2" | 10-15 |
| Downy Woodpecker | 1-1/4" | 6-20 |
| Hairy Woodpecker | 1-1/2" | 12-20 |
| Purple Martin | special crescent | 12-20 |
| Crested Flycatcher | 2" | 8-20 |
| Flicker | 2-1/2" | 6-20 |
| Red-Headed Woodpecker | 2" | 12-20 |
| Barn Swallow | OPEN SIDES | 8-12 |
| Phoebe | OPEN SIDES | 8-12 |
| Robin | OPEN SIDES | 6-15 |
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