Nesting season is upon us, and if you're a bird enthusiast or simply love the idea of attracting these feathered friends to your backyard, you might be wondering how to build a barn swallow bird house. Known for their acrobatic flying skills and distinctive rust-red breast patches, barn swallows are delightful additions to any property. And the best part? You can create a cozy home for them using free, easy-to-follow plans. Let's dive into the world of DIY bird houses and explore how you can attract these fascinating birds to your outdoor space.

Building a barn swallow bird house is not only a rewarding project but also an excellent way to promote wildlife conservation. Barn swallows are cavity nesters, which means they seek out natural or man-made cavities, like holes in trees or buildings, to build their nests. By providing a safe and suitable alternative, you're helping these birds thrive in your local ecosystem. So, let's get started with the essential aspects of creating an ideal barn swallow bird house.

Understanding Barn Swallow Nesting Habits
Before we delve into the free bird house plans, it's crucial to understand barn swallow nesting habits. These birds prefer to nest in open areas near water sources and have a strong preference for structures with eaves or overhangs, such as barns, sheds, and bridges. They also favor locations with abundant insect activity, as their diet primarily consists of flying insects caught mid-air.

Barn swallows typically return to the same nesting site year after year, so providing a suitable bird house can encourage them to nest in your backyard. By understanding their nesting habits, you can create an inviting and functional bird house that meets their specific needs.
Size and Dimensions

When building a barn swallow bird house, it's essential to consider the appropriate size and dimensions to accommodate these birds' nesting habits. Barn swallows require a larger entry hole than other bird species, as they build their nests on the floor of the bird house and need enough space to fly in and out with ease.
Ideal dimensions for a barn swallow bird house include an entry hole diameter of 1.5 to 2 inches (3.8 to 5 cm), an interior floor area of at least 8 inches by 8 inches (20.3 cm by 20.3 cm), and a height of around 10 inches (25.4 cm). The entrance hole should be positioned about 6 inches (15.2 cm) above the floor to provide enough space for the birds to build their nests.
Materials and Construction

Choosing the right materials is crucial for creating a durable and long-lasting bird house. Barn swallows prefer natural materials, so opt for untreated wood like cedar or pine, which are rot-resistant and provide excellent insulation. Avoid using pressure-treated wood, as the chemicals can be harmful to the birds and their nestlings.
Assemble the bird house using exterior-grade screws or nails to ensure it can withstand the elements. You can also paint the exterior with a non-toxic, water-based paint to protect the wood and make the bird house more visible to the birds. However, it's essential to leave the interior unpainted to provide a safe and natural environment for the nesting birds.
Free Barn Swallow Bird House Plans

Now that you understand the essential aspects of building a barn swallow bird house, let's explore some free plans you can use to create a perfect home for these delightful birds.
There are numerous free bird house plans available online, catering to various skill levels and materials. Some popular designs include the classic gabled roof style, the open-front design, and the multi-compartment bird house. Choose a plan that suits your preferences and skillset, and don't hesitate to modify it to better accommodate barn swallows' specific needs.


















Classic Gabled Roof Bird House
The classic gabled roof bird house is a popular choice for barn swallows due to its spacious interior and slanted roof, which helps to keep rainwater out. This design typically features a front entrance, a slanted roof with overhanging eaves, and an open floor plan. You can find free plans for this design online, which usually include detailed instructions and illustrations to guide you through the construction process.
To attract barn swallows, ensure the entry hole is large enough (1.5 to 2 inches in diameter) and position the bird house on a pole or under an eave, mimicking the natural nesting sites these birds prefer. You can also add a perch near the entrance to provide a convenient landing spot for the birds.
Open-Front Bird House
The open-front bird house is another excellent option for barn swallows, as it provides ample space for the birds to build their nests on the floor. This design features an open front, allowing the birds to access the interior easily, and often includes a slanted roof or an overhanging eave to protect the nest from rain and predators.
When building an open-front bird house, make sure to include a solid back wall and a floor to provide a stable base for the nest. You can also add a removable roof or a cleaning access panel to make it easier to maintain the bird house and monitor the nesting progress.
Multi-Compartment Bird House
A multi-compartment bird house can attract a variety of bird species, including barn swallows, by offering multiple nesting cavities in a single structure. This design features several separate compartments, each with its own entrance hole and interior space, connected by a central support post.
To accommodate barn swallows in a multi-compartment bird house, ensure that at least one of the compartments meets their size requirements (an entry hole diameter of 1.5 to 2 inches and an interior floor area of at least 8 inches by 8 inches). You can also position the bird house on a pole or under an eave to make it more appealing to these birds.
In your quest to create the perfect barn swallow bird house, remember that patience and persistence are key. It may take some time for the birds to discover and occupy your handiwork, but with the right design and placement, you'll soon be enjoying the delightful sight of barn swallows nesting in your backyard. Happy birding!