8 Supplies for Attracting Bluebirds and Barn Swallows

Watching a swarm of flies hover over your pasture can make any hobby farmer wish for a natural, chemical-free solution to pest control. Inviting bluebirds and barn swallows to your property is the most effective way to put nature to work on your insect problem. With the right set of durable supplies, you can transform your acreage into a thriving sanctuary for these hard-working insectivores.

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Creating a Welcoming Habitat for Insect-Eating Birds

Insect-eating birds are the unsung heroes of the small-scale farm. Bluebirds and barn swallows can consume hundreds of beetles, mosquitoes, flies, and moths every single day. By encouraging these species to nest near your gardens and pastures, you establish a highly effective, self-sustaining pest management team.

Relying on chemical sprays often backfires by destroying the very food source these beneficial birds depend on. Instead, providing targeted nesting sites, clean water, and supplemental feeding during lean times ensures they remain on your property. This balanced approach turns a simple backyard or pasture into a highly productive avian habitat.

To attract these birds successfully, you must address their specific nesting and hunting styles. Bluebirds are cavity nesters that hunt from low perches in open fields, while barn swallows are aerial acrobats that build mud nests on vertical structures. Meeting these distinct needs requires a deliberate selection of specialized gear.

Bluebird House – Woodlink Cedar Bluebird House

Cavity-nesting bluebirds cannot excavate their own homes, meaning they rely entirely on existing hollows or man-made boxes. Without a secure, weather-tight nesting box, these birds will bypass your property in search of better shelter. Providing a dedicated house is the single most important step in establishing a resident bluebird population.

The Woodlink Cedar Bluebird House is built specifically to meet the biological needs of bluebirds while standing up to harsh outdoor conditions. Constructed from thick, natural red cedar, this house provides excellent insulation against both spring chills and summer heat. The front panel swings open easily, allowing for quick cleanouts between nesting broods.

• Material: Natural, rot-resistant red cedar
• Entry Hole: Exactly 1.5 inches to exclude larger invasive birds
• Ventilation: Built-in air gaps at the top corners
• Mounting: Pre-drilled holes for easy pole or post attachment

Before mounting this house, ensure you have a plan for seasonal maintenance. Cedar weathers to a natural gray over time, which requires no paint or stain—in fact, painting the interior can harm the nestlings. This box is ideal for landowners with open pastures, but it is not suitable for deep, heavily wooded areas where bluebirds rarely venture.

Nesting Cup – Erva Tool Barn Swallow Nesting Cup

Barn swallows are famous for building cup-shaped mud nests on the vertical walls of barns, porches, and outbuildings. Unfortunately, they often choose inconvenient locations, such as directly above doorways or light fixtures, leading to messy accumulations of droppings. A designated nesting cup redirects their building efforts to a safer, cleaner location.

The Erva Tool Barn Swallow Nesting Cup provides an ideal, pre-formed foundation that mimics a half-built mud nest. The durable metal bracket holds a textured wood-fiber cup securely in place, giving the birds a massive head start on construction. This sturdy design prevents the nest from falling down mid-season, which is a common tragedy with pure mud nests on slick painted surfaces.

• Bracket Material: Heavy-duty, powder-coated steel
• Cup Material: Textured, moisture-resistant wood fiber
• Installation: Simple two-screw mounting system
• Design: Semi-circular shape that fits flush against flat walls

When installing this cup, choose a spot sheltered from direct rain, such as under a deep eave or inside an open-front shed. Swallows need vertical clearance to fly in, so avoid tight, enclosed corners. This product is perfect for barn owners looking to manage swallow placement, but it will not attract birds if mounted out in an open, structureless field.

Mealworm Feeder – Erva Bluebird Mealworm Feeder

Bluebirds are strict insectivores and will completely ignore standard tube feeders filled with sunflower seeds or millet. To attract them close to your home or garden, you must offer their favorite delicacy: mealworms. A specialized feeder keeps these valuable treats safe from weather and greedy non-target birds.

The Erva Bluebird Mealworm Feeder features a clever caged design that solves the problem of feeder bullies. The outer steel cage has specific 1.5-inch openings that allow sleek bluebirds to slip inside easily while blocking larger pests like starlings, crows, and blue jays. Inside, a heavy glass dish holds the mealworms securely, preventing them from blowing away or crawling out.

• Cage Material: Rust-resistant, powder-coated steel
• Feeder Dish: Removable, dishwasher-safe heavy glass
• Entry Size: 1.5-inch grid openings
• Hanging Style: Strong top loop for hook or branch suspension

Keep in mind that bluebirds may take a few days to figure out how to navigate the outer cage. Removing a few vertical wires temporarily can help guide them, though this is rarely necessary if they spot the mealworms inside. This feeder is a must-have for anyone serious about feeding bluebirds exclusively, but it is not meant for dispensing standard birdseed mixes.

Bird Bath – Allied Precision Heated Bird Bath

Water is just as critical as food for insect-eating birds, both for hydration and for keeping their feathers clean. Clean feathers provide vital insulation during cold spring nights, making a reliable water source a major draw. In early spring, when natural water sources are still frozen, a heated bird bath becomes an irresistible oasis.

The Allied Precision Heated Bird Bath features an internal, thermostatically controlled heater that operates automatically. It keeps the water ice-free down to sub-zero temperatures, yet consumes minimal electricity by running only when necessary. The shallow basin has a textured surface, giving small birds the secure footing they need to bathe safely without slipping.

• Basin Diameter: 20 inches
• Heating Element: 150-watt integrated, hidden heater
• Material: Durable, weather-resistant plastic composite
• Mounting Options: Includes hardware for deck rails, clamps, or ground placement

This unit requires a nearby outdoor-rated GFCI outlet and a heavy-duty extension cord to operate its heating element. During the hot summer months, the heater remains off, allowing you to use the bath year-round. It is an essential tool for northern climates with freezing winters, but southern farmers in frost-free zones can opt for a non-heated model instead.

Predator Guard – Woodlink Audubon Squirrel Baffle

An unprotected nest box is nothing more than a feeding station for climbing predators like raccoons, snakes, and feral cats. These predators can easily scale wooden posts or metal pipes to raid nests for eggs and young chicks. Installing a physical barrier on your mounting pole is the only way to guarantee the safety of nesting families.

The Woodlink Audubon Squirrel Baffle is a highly effective, torpedo-shaped steel collar that stops climbing predators in their tracks. Made of textured, black-painted steel, it mounts directly to your support pole below the nest box. When a predator attempts to climb, the baffle blocks their upward path and wobbles slightly, forcing them to slip back to the ground.

• Material: 18-gauge, powder-coated steel
• Diameter: 6 inches
• Length: 14 inches
• Compatibility: Fits round poles from 0.5 inches to 1.375 inches in diameter

For this baffle to work effectively, the bottom of the baffle must sit at least four feet off the ground to prevent predators from jumping over it. It comes with a secure mounting coupler, requiring only a screwdriver for installation. This guard is a non-negotiable lifesaver for pole-mounted bluebird boxes, but it cannot be used on wall-mounted nesting cups.

Nesting Material – BestNest Cotton Nesting Forage

Building a nest requires an immense amount of energy from female birds during the chilly days of early spring. If natural materials like dry grass, animal hair, and feathers are scarce, nest building can be delayed or abandoned entirely. Providing clean, dry nesting material nearby helps birds establish their homes quickly and efficiently.

The BestNest Cotton Nesting Forage offers a premium blend of 100% natural, chemical-free cotton fibers and sheep’s wool. This material is highly insulating, keeping delicate eggs warm when the parents must leave the nest to hunt. The fibers are pre-cut to safe lengths, preventing the dangerous leg tangles associated with synthetic threads or long hair.

• Ingredients: Natural cotton fibers and washed sheep’s wool
• Dispenser: Weatherproof wire cage with hanging hook
• Safety: Completely free of dyes, pesticides, and synthetic fibers
• Refillable: Dispenser can be opened and refilled season after season

Hang this dispenser in a highly visible, dry location near your nesting boxes starting in late winter. Avoid placing it directly in wet areas, as soggy cotton can mold if it does not dry out quickly after a rainstorm. This product is highly beneficial for tidy suburban farms, but it may be redundant if your property already has abundant natural sheep pasture or loose animal hair.

Dried Mealworms – Kaytee Dried Mealworms

When parent birds are raising a hungry brood of up to six chicks, their daily insect requirements skyrocket. During cold, rainy spells, insects become inactive, making it incredibly difficult for parents to find enough food. Keeping a supply of high-protein dried mealworms on hand ensures the chicks survive these critical weather events.

Kaytee Dried Mealworms provide a concentrated source of protein and fat that mimics the natural diet of insectivorous birds. These oven-dried mealworms are shelf-stable, requiring no refrigeration or special care, unlike live insects. They are easy to handle, store, and scatter into your feeders whenever the birds need an energy boost.

• Nutritional Analysis: Minimum 47% crude protein, 25% crude fat
• Storage: Resealable, moisture-proof zipper bag
• Processing: Natural, oven-dried with no added preservatives
• Versatility: Can be fed dry or rehydrated in warm water

To make these dried mealworms even more appealing and digestible for young chicks, soak them in warm water for ten minutes before putting them out. Store the bag in a cool, dry place inside a metal container to prevent mice from chewing through the plastic. This is an excellent, cost-effective feed for busy hobby farmers, though live mealworms remain the gold standard for taming highly skeptical birds.

Mounting Pole – Erva Bluebird House Pole Kit

Mounting a bluebird house directly to a fence post or a mature tree is a common mistake. These structures provide easy pathways for climbing predators and make it difficult to position the box in the ideal direction. A dedicated metal pole isolates the nest box, allowing for perfect placement and easy maintenance.

The Erva Bluebird House Pole Kit is a heavy-duty steel support system designed to withstand high winds and heavy clay soils. It features a three-piece construction that slips together easily, coupled with a ground socket that provides excellent stability without requiring concrete. The kit includes a mounting flange that fits the bottom or back of most standard wooden bluebird houses.

• Total Height: 80 inches (leaves the box at the ideal 5-foot height once installed)
• Material: 1-inch diameter furniture-grade steel
• Finish: Rust-resistant black powder coat
• Installation: Includes a heavy-duty ground socket for easy driving

When installing this pole, choose a location with firm soil to prevent the pole from leaning over time. If your soil is extremely sandy, you may need to pack some gravel around the ground socket for extra support. This kit is the perfect foundation for any pasture-based bluebird setup, but it is unnecessary for wall-mounted barn swallow cups.

Where to Mount Your Nest Boxes for Best Results

Bluebirds are birds of the open country, meaning they require wide-open spaces with low grass to hunt successfully. Mount your bluebird boxes in pastures, large lawns, or along the edges of orchards where they have a clear line of sight. Face the entry hole toward the east or northeast to keep the hot afternoon sun from shining directly into the box and overheating the chicks.

Barn swallows have completely different nesting requirements, preferring the shelter of man-made structures. Mount nesting cups inside open barns, under deep porch eaves, or along the rafters of run-in sheds. Ensure the cup is at least seven feet off the ground to keep it safe from curious livestock and farm equipment, but leave at least six inches of clearance below the ceiling so the birds can easily enter.

Spacing is another critical factor to consider when setting up your bird sanctuary. Bluebirds are highly territorial and will fight rivals, so keep their boxes at least 100 yards apart. Barn swallows, on the other hand, are colonial nesters; you can mount multiple nesting cups just a few feet apart along the same rafter without causing any domestic disputes.

How to Protect Nesting Birds from Common Predators

The key to successful bird conservation on a farm is anticipating the local predator population. Raccoons, opossums, snakes, and feral cats are all skilled climbers that will actively search for nesting boxes. A single successful raid can wipe out an entire brood and discourage the parent birds from ever returning to your property.

Always install a metal baffle on every mounting pole, and ensure the pole is placed far away from overhanging tree branches or fence lines. Predators can easily climb a nearby tree and jump sideways onto the roof of an unprotected nest box. Keep the grass around the base of the pole mowed short to deny cover to stalking cats and snakes.

For barn swallows nesting inside outbuildings, focus on controlling access to the rafters. Applying slick metal flashing around support posts can prevent snakes and rodents from climbing up to the nesting cups. Additionally, keeping the entry holes of your bluebird boxes strictly to 1.5 inches prevents larger, aggressive birds like starlings from entering and killing the nesting residents.

Cleaning and Maintaining Your Bird Supplies Yearly

Neglecting your bird boxes and feeders after the nesting season ends is a recipe for disease and parasite buildup. Blowfly larvae, mites, and fungal spores can overwinter inside old nesting material, ready to infest the next spring’s brood. Annual maintenance preserves the life of your wooden boxes and protects the health of future avian generations.

In late autumn, after you are certain the birds have fully migrated, open each bluebird box and scrape out all old nesting material. Scrub the interior thoroughly with a stiff brush and a solution of one part bleach to nine parts water. Leave the front door of the box open for a few days to let the cedar air-dry completely in the sun before closing it up for the winter.

Annual Maintenance Checklist: ??? October: Clean out and sanitize bluebird boxes ??? November: Store summer feeders and clean bird baths ??? February: Re-hang nesting material dispensers ??? March: Unclog drainage holes and check mounting poles

Keep your mealworm feeders and bird baths clean throughout the active season by scrubbing them weekly with hot water. Store your dried mealworms in airtight, rodent-proof metal cans to prevent pantry moths and mice from ruining your supply. Taking these simple steps ensures your equipment remains sanitary and ready to welcome back your pest-control team every spring.

Setting up a dedicated system of houses, feeders, and baths is a practical investment in the natural balance of your hobby farm. By providing these essential supplies and maintaining them year-round, you secure a reliable, chemical-free line of defense against destructive insects. With a little preparation before the spring migration, you can sit back and watch your new avian partners take to the skies.