Best Great Horned Owl Nest Box Options for Your Outdoor Space

ONKO Large Great Horned Owl House

The ONKO Large Great Horned Owl House is engineered to accommodate large owl species with its spacious interior. At approximately 13.78 inches long, 10.24 inches wide, and 22.83 inches tall, the box provides ample space for roosting, nesting, and movement. The elevated, cavity-like design mirrors natural tree hollows, which helps reduce crowding and supports healthy brooding. A key benefit is its weatherproof construction, designed to withstand moisture and temperature changes while maintaining interior comfort through ventilation and drainage features. The kit includes clear assembly instructions and hardware, enabling a one-person setup that can be completed in minutes. This makes it suitable for barns, woodlands, and sheltered backyards where larger owls may settle.

Pros: generous interior space, weather-resistant exterior, straightforward assembly. Cons: larger footprint requires more wall or tree space; installation may require a sturdy mounting option in exposed locations.

Large Barn Owl House

This ONKO model emphasizes simplicity and sturdy construction with a natural pine-like finish and a spacious interior (about 10.6″ x 8.7″ x 15.7″). The design is tailored for easy installation, aided by a step-by-step guide and complete hardware kit. The oversized interior gives roosting and nesting areas ample space, reducing stress and facilitating feeding and brooding. The feature set also includes a predator-savvy circular entrance and a weather-protective exterior that helps preserve interior conditions during seasonal shifts. The product is positioned as a versatile home for barn and screech owls in outdoor habitats.

Pros: quick assembly, generous interior, predator-conscious design. Cons: slightly smaller footprint than the largest boxes, may require larger mounting surfaces for secure placement.

Barn Owl House

The Barn Owl House from ONKO emphasizes a balance of interior space and maintenance practicality. Measuring 10.6″ by 8.7″ by 15.7″, it offers a welcoming interior for roosting, nesting, and rearing. A practical latch system enables easy cleaning and debris removal, which supports long-term use as a wildlife sanctuary. The box is built from premium pine with waterproof coating to resist weathering and extend its lifespan. The rounded, naturalistic exterior and compact form make it well-suited for tree trunks, fence lines, and sheltered wall installations where barn owls and screech owls may visit.

Pros: easy cleaning access, durable wood, weather protection. Cons: standard interior may be less generous for very large broods compared to the biggest models.

JCS Wildlife Barred Owl Nesting Box

The JCS Wildlife Barred Owl Nesting Box is designed with a dedicated clean-out door for easy maintenance and camera access to observe owlets. The front includes grip grooves for secure handling by adult owls during nesting cycles. While it emphasizes practical cleaning and observation, the box also features sturdy construction and mounting versatility. The design aligns with Barred Owl preferences, offering a sheltered interior and a protection-forward build that helps deter predators. This box is manufactured in the USA, reflecting a focus on quality control and dependable durability.

Pros: easy cleaning and monitoring, predator-aware design, American-made. Cons: smaller interior space suitable for Barred Owls rather than the largest horned varieties.

WHITEHORSE Large Cedar Owl House

The WHITEHORSE cedar owl house is a weatherproof option crafted from Western cedar. Its design emphasizes durability and moisture resistance, with a 3-inch roof overhang to shield the entry from rain and sun. The recessed door and floor help keep the nest dry, while dado joints enhance stability. The package includes cedar shavings and a printed installation guide plus a step-by-step video, making outdoor mounting straightforward. This box suits a range of owl species, including screech owls, boreal owls, pygmy owls, and others, making it a flexible choice for mixed habitats.

Pros: weatherproof cedar construction, additional nesting materials, clear installation resources. Cons: cedar color may weather over time, requiring occasional maintenance for aesthetic purposes.

Buying Guide: Key Considerations For Great Horned Owl Nest Boxes

Choosing the right nest box involves balancing space, durability, predator protection, and placement. Here are the main considerations to help compare options:

• Species compatibility: Great horned owls require spacious interiors and secure entrances. Look for boxes with larger dimensions and predator-resistant entry designs.
• Materials and durability: Weatherproof woods like cedar or treated pine are preferred for outdoor use. Water resistance, rot resistance, and long-term stability matter in harsh climates.
• Ventilation and drainage: Adequate airflow and moisture management keep the nesting environment healthy and reduce mold risk.
• Ease of maintenance: A clean-out door or easy-access panels simplify debris removal and yearly inspections.
• Placement and mounting: Secure mounting on sturdy poles or trees, with some shade and protection from direct exposure to wind and heavy rain, supports longevity.
• Ease of installation: Clear instructions and included hardware save time and reduce mounting errors, especially for first-time installers.
• Wildlife safety considerations: Avoid interior coatings or paints that could emit fumes; natural or carbonized wood finishes are generally better for wildlife.

Comparison notes: Large interior boxes provide more space for adult owls and growing owlets, but they require solid mounting and more tree or wall space. Boxes with dedicated clean-out doors enable easier cleaning and camera setup. Cedar and weatherproof finishes offer better longevity in exposed environments, while natural-looking exteriors help blend with forest surroundings and reduce stress on wildlife.