Keeping Barn Owls: Housing and Husbandry Basics

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15 Aug 2026

Keeping Barn Owls: Housing and Husbandry Basics

Understanding the Barn Owl's Needs

Barn owls are not domestic pets. They are wild birds with specialised requirements, and in the UK they are protected by law. Keeping them in captivity demands dedication, suitable facilities, and a thorough understanding of their biology. This article covers the essentials of housing and husbandry for captive barn owls, whether for falconry display, conservation breeding, or educational purposes.

Before acquiring a barn owl, consider whether you can provide a lifetime of care—they can live 10 to 15 years or more in captivity. They need space to fly, a controlled diet, and regular health monitoring. They are sensitive to stress, so a quiet, consistent environment is vital.

Aviary Design and Construction

A well-designed aviary is the foundation of good barn owl care. The minimum size for a single bird is 3m long x 1.5m wide x 2m high, but larger is always better—aim for 4m x 2m x 2.5m if possible. The aviary should allow short flights, not just hopping.

Materials: Use sturdy timber or metal frames. Avoid treated wood that birds might chew; use non-toxic paints or natural timber.
Mesh: Weldmesh with 25mm x 25mm holes is ideal. It prevents entry by rodents and predators, and stops owls poking their heads through. Ensure mesh is galvanised and rust-free.
Shelter: Provide a covered, draught-free area where the owl can escape wind, rain, and direct sun. A raised nest box (approximately 60cm x 40cm x 40cm) with a 10cm entrance hole should be installed in the sheltered section.
Perches: Use natural branches of varying diameters (2–5cm) at different heights. Avoid doweling, which can cause foot problems. Place perches away from mesh to prevent feather damage.
Floor: A concrete base with a layer of wood shavings or sand is easy to clean. Avoid soil, which can harbour parasites and dampness.
Double doors: An entrance porch or double-door system prevents escapes. Always ensure the owl is secure before entering.
Weather protection: Position the aviary to catch morning sun but avoid prevailing winds. A solid roof over part of the aviary is essential.

Diet and Feeding

Barn owls are carnivores. In captivity, the staple diet is day-old chicks, mice, and rats, all available frozen from reputable suppliers. Variety is important for nutritional balance.

Adult diet: Feed two to three food items per day, depending on size. A typical adult barn owl weighs 250–350g and needs about 50–70g of food daily. Adjust based on body condition.
Supplements: Frozen prey loses some vitamins. Add a calcium and vitamin supplement two to three times a week, especially for breeding birds and growing chicks.
Water: Provide a shallow, heavy bowl of fresh water daily. Owls drink little but need access, especially in hot weather.
Feeding routine: Feed at dusk, when owls are naturally active. Remove uneaten food the next morning to prevent decay.
Weight monitoring: Weigh your owl weekly on a digital scale. Sudden weight loss or gain indicates a problem. Keep a record.
Casting: Owls regurgitate indigestible fur and bones as pellets. This is normal. If pellets stop, check for impaction.

Health Checks and Routine Care

Daily observation is your best tool. A healthy barn owl is alert, has bright eyes, clean feathers, and a good appetite. Any change in behaviour warrants investigation.

Weekly check: Weigh the bird. Examine the keel (breastbone)—it should be felt but not sharp. Check feet for sores or bumblefoot. Look at the vent for cleanliness.
Feather condition: Check for broken or frayed feathers, especially on the wings and tail. Damaged feathers impair flight and insulation.
Beak and talons: Trim only if overgrown, and only if you are experienced. Otherwise, consult a veterinary surgeon.
Parasites: Watch for lice, mites, and worms. Regular faecal tests can detect internal parasites. Treat under veterinary guidance.
Common ailments: Bumblefoot (foot infection), aspergillosis (respiratory fungal infection), and trichomoniasis (from contaminated water) are serious. Seek veterinary advice immediately.
Vet care: Find an avian vet before you need one. Annual health checks are recommended.

Legal Considerations in the UK

Barn owls are protected under the Wildlife and Countryside Act 1981. It is illegal to take them from the wild or disturb their nests. Captive-bred birds are available, but you must ensure they are legally sourced.

Registration: In England, you may need to register with Natural England if you keep certain birds of prey, including barn owls, for commercial purposes. Check current rules.
Article 10 certificate: If you sell or transfer a barn owl, you may need an Article 10 certificate, which proves the bird is captive-bred. This is issued by the relevant government body.
Animal Welfare Act 2006: You have a legal duty to provide for the owl's welfare—suitable diet, housing, and veterinary care.
Local authority licences: Keeping animals for exhibition or hire may require a licence under the Animal Welfare (Licensing of Activities Involving Animals) Regulations 2018.
Scotland, Wales, and Northern Ireland: Regulations differ. Always check with NatureScot, Natural Resources Wales, or DAERA.

Ignorance is not a defence. Before acquiring a barn owl, contact the relevant authority to ensure you are compliant.

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5 Comments

Robert Sonny says Jul 21, 2024 at 10:00am

I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system
Reply
- John Abraham says Jul 21, 2024 at 10:00am
  
  I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system
  Reply
  - Robert Sonnysays Jul 21, 2024 at 10:00am
    
    I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system
    Reply
Robert Sonny says Jul 21, 2024 at 10:00am

I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system
Reply

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