So, although we’ve already mentioned it, it warrants repeating that a birdhouse entryway should be designed with the needs of specific bird species in mind. Species like purple martins are more comfortable with crescent-shaped holes. They also prefer those nests to have certain designs.įor instance, barn swallows and robins prefer open-sided homes. Other birds are not only specific about the diameter of their nest entrance holes. An inch too small or too large may be an instant turnoff. These birds prefer their nest entryways to be small enough to deter predatory birds or other animals that could be out to kill their hatchlings, and large enough to allow for seamless entry and exit into the nest. In fact, nesting birds like chickadees, swallows, bluebirds, and wrens tend to be more particular about their house entrance holes. But as you shall find, the right birdhouse entrance hole largely depends on the specific bird species you’re building the house for.
Many wild birds prefer their birdhouse or nestbox entrance holes to range between 1 inch and 2 inches in diameter.
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How to Settle On the Right Birdhouse Hole Size Of course, there are other important factors to bear in mind as well.īut how do you determine the right birdhouse entrance? That question shall be the focus of this post. So, when designing a birdhouse, it’s imperative to pay keen attention to the nest’s entrance. In the process of forcing themselves in or out of the nest, the birds could damage their feathers. Similarly, a tiny birdhouse entrance could make it difficult for larger birds to enter or exit the nest. If you go for an overly large entrance, you may find the birdhouse attracting all manner of birds, including undesirable species like birds of prey.
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No matter how appealing the nest may be, incorrect hole size is an instant turn-off to most birds.īirdhouse diameter is also a crucial security feature, much like the regular doors and windows in our homes. The diameter of your birdhouse entrance determines which birds can fit into the hole and use the house comfortably. One key consideration when building a birdhouse or nestbox is the size of the entrance, also known as birdhouse hole.
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