What size hole is needed for a bluebird house? House Sparrows are strong competitors for nest boxes, too, at times displacing the species the nest box was intended for, such as bluebirds and Tree Swallows.

Not all birds will use a nesting cavity, but those that will do have preferences for the dimensions of the box and the diameter of the entrance hole.

The circular hole shown in … Determine the dimensions of the birdhouse. 2. A simple birdhouse for Tree and Violet-green Swallows. 32 mm for house sparrows and nuthatches. 28 mm for great tits, tree sparrows and pied flycatchers. The recommended bird house hole size for this bird is 3 inches in diameter and it should be kept around 13 inches above the floor. When building bird houses it's important to know what species of birds you'll be building the house for. Determine the type of bird that you wish to use the birdhouse.

A bird house with the recommended dimensions for the eastern screech owl can easily attract these birds. The birdhouse hole size chart below is meant to be a general guideline of how each species of bird prefer their home.

Individual birds may use an entrance hole slightly smaller or larger than the size listed.

Made from Eastern white pine to insulate your birds from cold, wet weather for a successful brood. Sparrows out of Bluebird houses by: David Rowzee If you drill a 2 inch hole in the roof of your bluebird house, it will keep the sparrows away. House Finch Birdhouses installed at significant heights, including just out of reach, should be installed and maintained by professionals, carpenters, electricians, power line workers, etc. Depending on the bird and climate, the size of the hole will varry. House Sparrows and Starlings are also attracted to bird houses with entrance holes of the size in this house. The side door is very good for tracking the activity.

For a round entrance hole , eastern bluebird boxes should be 1 1/2 inches in diameter and 1 9/16 inches for mountain and western bluebirds . Nest Description. Best of all, the swing-open side will give you a chance to glimpse in to the nestlings for whom you’ve supplied a sturdy and secure home. 28 mm for great tits, tree sparrows and pied flycatchers.

For a round entrance hole , eastern bluebird boxes should be 1 1/2 inches in diameter and 1 9/16 inches for mountain and western bluebirds . Of particular importance is the hole size. Wrens will use a house that has an entry hole dimension of 1 1/8 inches, any larger and house sparrows and other less desirable birds will use them. Below you will find a chart with some specs to build houses for various common cavity nesting birds: Bird House Dimensions Chart Entrance holes measuring 2 1/8 inches are the most popular. Birdhouse Dimensions Chart. Bluebirds and House Wrens have different entrance hole sizes and floor to opening height requirements. Sparrow Bird House Plans Song Bh Luxihome from Bird House Plans For Sparrows, source:luxihome.com. The most important element is getting the entrance hole size correct, especially to eliminate larger pest birds such as starlings from using the box . For Chickadees, 1-1/8 inches is the normally quoted size, but this will be a bit too small in northern areas where they get plumper. Follow the chart below to determine the proper nest box dimensions for each bird species. A standard, small hole-fronted nest box, with an entrance hole of 32 mm diameter, works best for this species. Crescent-shaped holes can also be effective in preventing other birds from using the houses, but purple martins have no trouble with that unusual shape. (Size Chart Below.) One size does not fit all when it comes to building bird houses. Dawson, The Birds of Ohio, 1903. Starlings and House Sparrows (two predator bird species) have a tough time entering a bird house with a hole size of 1-1/8" (which is ideal for chickadees). Most birds require different sizes of birdhouses as well as entrance holes. An oval-shaped hole is made to help keep the House Sparrows out. Do not add or buy any birdhouse with a perch. Entrance hole: The diameter of the entrance hole should be between 1 3/4 and 2 1/4 inches. The floor should be 4 inches square and 3-6 inches below the entry hole.

Sparrows don't like the light coming in, …

Both acrobatic and lean, Tree Swallows have V-shaped bodies that fit perfectly through this oval entrance. The entrance hole size depends on the species you hope to attract: 25 mm for blue, coal and marsh tits.