What is a Barn Owl?

The Barn Owl (Tyto alba) is a pale, silent-flying owl of open farmland, rough grassland and field edges. It hunts mainly at dusk and through the night, often ranging low over grass. It nests and roosts in barns, old buildings, hollow trees and nest boxes, which is how it got its name.

How big is a Barn Owl?

It's a medium-sized owl, about 33–39 cm long with a wingspan of 80–95 cm. It looks bigger than it is because its feathers are so fluffy.

What does a Barn Owl weigh?

Usually 250–350 g, and females are typically a little heavier than males. That's remarkably light for its size, which helps with slow, silent flight.

What does a Barn Owl look like?

It has a white, heart-shaped face, dark eyes, and golden-buff back and wings with soft grey markings. The underparts are white to pale buff, and the legs are long and feathered.

Why do Barn Owls look so pale at night?

Their light-coloured underside is unlike anything else at night, and as humans, we find it unusual, especially under car headlights.

Are there different colours of Barn Owl?

Yes. Individual birds range from very white to a richer buff, and females are usually darker with flecks on the chest. Across Europe, there's also a darker, orange-breasted form that occasionally turns up in Britain. Most UK birds are the pale, white-breasted type.

How many species of Barn Owl are there?

Britain has just one. Worldwide, the answer depends on who you ask, because DNA studies have led to extensive reclassification. Owls in the Americas are now usually treated as a separate species, leaving the Old World Barn Owl with around ten regional forms. The one in Britain is the western European form, Tyto alba alba.

How do you tell a male from a female?

It's tricky and not always reliable. Males tend to be whiter underneath with few or no spots, while females are often buffer and more heavily speckled on the breast. Females are also slightly larger and, during the breeding season, have a bare brood patch on their bellies. Seeing a pair together makes the difference much easier to spot.

How can you tell a Barn Owl from a Tawny Owl?

A Barn Owl is pale, with a white heart-shaped face, dark eyes and long legs. A Tawny Owl is chunkier and brown, with a rounder face and a mottled body. Their voices differ too: Barn Owls screech, while Tawnies give the classic hoot and "kewick" calls.

How long do Barn Owls live?

Most don't live long. Around two-thirds of young die in their first year, and the average life expectancy in the wild is only about 4 years. A few live beyond 10, and the oldest known wild UK birds have passed 15. Captive birds can live over 20 years.

Where in the world are Barn Owls found?

On every continent except Antarctica, which makes them among the most widespread birds of all. They occur across Europe, Africa, the Americas, Asia, and Australia, as well as many islands.

Why are Barn Owls called "ghost owls"?

Their pale plumage, silent flight and eerie screech made them seem supernatural to people long ago. They appeared out of the dark in old churches and ruins, and a lot of folklore and superstition grew up around them.

What adaptations does a Barn Owl have?

• Silent flight: soft, velvety feathers and comb-like edges on the wing feathers muffle the sound of flight.
• Super-sensitive hearing: the flat facial disc funnels sound to the ears, which sit asymmetrically on the skull so the owl can pinpoint prey in three dimensions.
• Large, forward-facing eyes: these are tuned for low light.
• Flexible neck: it can turn its head about 270°.
• Strong feet: the talons are sharp, and the middle claw has a comb-like edge used for preening.

Why is a Barn Owl's face heart-shaped?

The face is a sound-collecting dish. Stiff, curved feathers guide noise towards the ears hidden on either side, much like a satellite dish focusing a signal. The owl can subtly change the shape of the disc to help it pinpoint faint rustles in grass.

Can Barn Owls see in the dark?

Their eyesight is excellent in low light, but in complete darkness they rely on hearing. They can catch prey in near-total darkness by sound alone.

How do Barn Owls see so well?

Their eyes are large and tube-shaped, with big pupils that let in lots of light. The retina is rich in cells that work in dim conditions, so their eyes are far more light-sensitive than ours. Both eyes face forward, which gives them good depth perception.

Can Barn Owls move their eyes?

No. Their eyes are held rigidly in bony sockets, so they turn their whole head instead. That's why their long, flexible neck matters so much.

Can Barn Owls see in colour?

Probably only weakly. Their eyes are tuned for brightness and movement in low light rather than for rich colour.

How good is a Barn Owl's hearing?

Exceptional. They can work out where a sound is coming from with an error of only a degree or two, which is why they can hit tiny prey in the dark.

Do Barn Owls have ear tufts?

No. The "horns" on some other owls are just feather tufts and have nothing to do with hearing. A Barn Owl's real ears are slits tucked beneath the feathers of its facial disc, set at slightly different heights so it can judge whether a sound is above or below it.

Why do Barn Owls bob their heads?

An owl's eyes are fixed in their sockets, so it moves its whole head to see. Bobbing gives it slightly different viewpoints, which helps it judge distance and depth and pinpoint sounds. It's also seen when an owl is curious or wary.

How can a Barn Owl turn its head so far?

Owls have around twice as many neck bones as we do, plus specially adapted blood vessels that keep blood flowing to the brain during a twist. That lets a Barn Owl look about 270° each way. It can't spin a full circle, but it can look straight behind itself.

Do Barn Owls blink?

Yes, but in a slightly odd way. Like other owls, they close the upper lid to blink and the lower lid to sleep. A thin, see-through inner eyelid also sweeps across the eye to clean and protect it.

What calls and sounds do Barn Owls make?

Not the "twit-twoo", which is a Tawny Owl. Barn Owls give a long, harsh screech, and they also hiss, click their bills and make purring or twittering sounds. Chicks make a "snoring" or hissing noise when begging for food.

Why do Barn Owls screech?

The call has several jobs: announcing a bird's presence, attracting a mate, keeping in touch with a partner, and raising the alarm. Because the call carries well at night, it's often the first clue that an owl is around.

Why can't a Barn Owl hoot?

Barn Owls belong to a different family from the "true" owls, such as the Tawny Owl, that hoot. Their voices work differently, so their repertoire consists of screeches, hisses, snores, and clicks.

How fast do Barn Owls fly?

Slowly and buoyantly when hunting, often at less than about 25 km/h. That easy pace lets them scan the ground and hover before pouncing. They can go faster when travelling.

Do Barn Owls have a good sense of smell?

No, it's poor. They rely on hearing and sight.

Why do Barn Owls have feathered legs and feet?

The feathering keeps the legs warm and helps cushion them against the bites and scratches of struggling prey. It also adds to the owl's soft, quiet profile in flight.

Are Barn Owl feathers waterproof?

Not very. Their plumage is soft and fluffy, built for silence rather than weather protection, so it soaks up water more readily than the feathers of many birds. That makes long spells of wet weather a real threat.

How do Barn Owls keep their feathers in good condition?

They preen with their beak and use the comb-like edge on the middle claw to tidy tricky spots. They also stretch and shake to keep their plumage in shape.

Do Barn Owls stand on one leg?

Yes, especially when roosting. Tucking one leg up into the belly feathers helps to keep it warm, and it shows the bird is relaxed.

When do Barn Owls come out to hunt?

Typically around dusk, and they keep going through the night. Activity often peaks in the hours after sunset and again before dawn.

How does a Barn Owl hunt?

It quarters low over rough grassland, usually 1–3 m up, listening for prey. It also hunts from fence posts and perches. On hearing a rustle, it hovers briefly, then drops feet-first onto the prey.

Why do I sometimes see Barn Owls hunting in daylight?

It usually means the owl needs extra food. Common reasons are a hard winter, bad weather the night before, or a pair feeding hungry chicks. Occasional daytime hunting is normal, but regular daytime hunting in winter can be a sign that food is scarce.

What do Barn Owls eat?

Mainly small mammals: field voles, wood mice and shrews, plus the occasional rat, small bird or frog. Field voles are the staple prey in the UK.

Do Barn Owls eat birds or bats?

Rarely, but not often. The diet consists overwhelmingly of small mammals, with birds, bats, frogs, and insects taken now and then, especially when voles are hard to find.

How much does a Barn Owl eat?

An adult typically gets through roughly three to five small mammals in a night. A nest full of growing chicks demands far more, so the parents may bring back well over a dozen prey items nightly.

How many small animals does a Barn Owl family eat in a year?

It's an estimate, but a single adult probably gets through 1,000 or more small mammals a year. A family with hungry chicks may need several thousand.

Do Barn Owls store food?

Yes. In good vole years, the male may bring back more than the family can eat at once, and a small stockpile of dead prey can build up in or near the nest. It acts as a buffer if hunting is poor.

Do Barn Owls swallow mice and voles whole?

Yes, usually head first and in one go. The indigestible parts are coughed up later as a pellet.

Where does a Barn Owl eat its prey?

It usually flies to a favourite perch or back to the roost or nest. Small prey may be gulped down quickly, and adults carry food to chicks whole.

Why do Barn Owls regurgitate pellets?

Fur, bones and teeth can't be digested, so the owl compacts them into a pellet and coughs it up, usually once or twice a day at the roost. Barn Owl pellets are dark, smooth and glossy, and they often contain whole skulls and bones.

What can pellets tell us about a Barn Owl?

By carefully pulling one apart, you can find skulls and jaw bones. These identify exactly which small mammals the owl has eaten, and counting them shows the mix of prey in its diet. This has made pellets a favourite tool for scientists and school groups.

How can you tell a Barn Owl pellet from a Tawny Owl pellet?

Barn Owl pellets are usually dark, smooth, and glossy, and they contain many intact bones. Tawny Owl pellets tend to be greyer and furrier, and less tidy.

Is it safe to handle owl pellets?

Old, dry pellets are low risk, and those sold to schools are often heat-treated. Wear gloves for fresh ones, avoid touching your face, and wash your hands afterwards.

Do Barn Owls drink?

Very rarely. Most of their water comes from their prey, though they'll occasionally drink or bathe.

Can Barn Owls hunt in rain or snow?

Not well. Heavy rain drowns out the tiny sounds they hunt by and soaks their feathers. Deep or crusty snow blocks access to prey, although they can sometimes catch animals through a thin cover. Long stretches of either can cause starvation.

What is the vole cycle and why does it matter?

Field vole numbers rise and crash over a few years. When voles are plentiful, Barn Owls lay more eggs and rear more chicks, and when voles are scarce, many pairs don't breed at all. That's why Barn Owl numbers naturally fluctuate.

Are Barn Owls harmed by rat and mouse poison?

Yes. Poisoned rodents can be slow to die, and an owl that eats them may absorb the toxin as well, a process called secondary poisoning. It can weaken or kill the bird, and the risk is greatest around farms and buildings where poison is used. Traps and good hygiene are safer alternatives.

Can you feed a Barn Owl?

It's not recommended. Wild owls need to hunt for themselves, and feeding can make them dependent and attract rats. If you find a sick, injured or grounded owl, contact a wildlife rescue or a specialist such as the Barn Owl Trust.

When do Barn Owls mate, and what time of year?

Courtship begins in late winter, with eggs usually laid from March to June. It's flexible, though, and depends on how many voles there are.

How do Barn Owls court each other?

The male displays around the nest site, swooping and screeching, and brings the female gifts of food. Once a pair has formed, he keeps feeding her. She chooses him partly on how well he provides, which matters, since he'll be her main food supply during incubation.

Do Barn Owls mate for life?

Generally, they pair for as long as both birds survive, and they usually re-pair quickly if a mate dies. Some pairs do split up.

Do Barn Owls have multiple partners?

Mostly no, but occasionally a male will breed with two females in a very good vole year, or if its partner dies.

How many eggs do Barn Owls lay?

Typically 4–6 white eggs, though it can range from 2 to 9. They're laid every 2–3 days, so the chicks hatch at different times and vary in size.

How big is a Barn Owl egg?

About 4 cm long and 3 cm wide, a little smaller than a typical hen's egg.

What colour is a Barn Owl egg?

White with a dull, matt finish. During incubation, eggs often become stained brown and grubby from nest debris.

How many broods do they have?

Normally one, but in a very good food year they may raise a second.

What's the incubation period?

About 30–31 days. The female incubates while the male brings her food.

Does the female ever leave the eggs?

Rarely, and only for short breaks to stretch or relieve herself. The male brings her food, so she can stay put and keep the eggs warm.

Will all the eggs hatch?

Not always. Some may be infertile, chill, or stop developing, so it's common for one or more to fail even when most hatch.

How does a chick get out of the egg?

It uses a tiny, hard "egg tooth" on the tip of its beak to crack the shell from the inside, and it drops off soon after hatching. Getting out can take a day or more.

How does weather affect Barn Owl breeding?

Weather matters a lot. Cold, wet spells make hunting hard and can cut breeding success, and drought can thin the grass cover that voles rely on. Tough years are often followed by a rebound.

How big are newly hatched owlets?

Tiny. They're roughly 15 g, blind at first and covered in thin white down, and completely dependent on their mother for warmth.

How do Barn Owl chicks develop from hatching to flying?

Within days, their eyes open, and a thicker second coat of down grows in. Proper feathers emerge after several weeks, and by about two months the chicks are feathered, exercising their wings and ready to fledge.

How fast do owlets grow?

Very fast. In a few weeks a chick swaps its down for a thicker coat and then for feathers. At their heaviest, chicks can outweigh their parents, then slim down before their first flight.

Why are the chicks in one nest so different sizes?

Eggs are laid a couple of days apart, and incubation begins early, so the chicks hatch at staggered times. The oldest is far ahead in size and gets first pick of the food. This is a survival strategy: in good years, everyone survives; in lean years, only the biggest do.

Do both parents feed the chicks?

At first, the female stays on the nest to keep the chicks warm while the male hunts. As the chicks grow, she joins in, and both parents bring food, often in large quantities.

Can a young owlet eat a mouse whole?

Very young chicks are fed small pieces. By a few weeks old, they can all swallow whole mice and voles. Occasionally, an owlet in its first week in life will swallow a small vole whole!

Do Barn Owls eat their young?

Not deliberately. In a poor food year, the smallest chick often loses out and dies, and its body may be eaten by siblings or a parent. This behaviour is more common in Tawnies.

How long does the owlet stay in the nest?

Around 8–10 weeks before its first flight.

What does the owlet do when it leaves the nest?

It stays close at first, perching nearby and returning to the nest site to be fed for a few weeks while it learns to hunt. It then disperses, often in autumn, typically over 5–15 km, but sometimes much farther. Many die in their first winter.

Will the owlet leave the nest site, and will it come back each year?

Yes, it leaves for good. Young owls don't usually return to breed at their birth site. It's the adult pair that tends to come back to the same nest year after year.

When does an owlet breed?

Many will breed when they're around a year old if they find a mate.

What should I do if I find a baby Barn Owl on the ground?

First, stay calm and keep your distance. If it's fully feathered and looks healthy, it may just be exploring, which is normal. If it's downy, cold, injured, or in danger, keep it quiet and warm, don't try to feed it, and contact a wildlife rescue, the RSPCA, or a Barn Owl specialist for advice.

Do Barn Owls sleep during the day?

Mostly, yes. They spend the day dozing in a dark, sheltered roost, typically upright with eyes half-closed and feathers fluffed.

How far do Barn Owls travel in a night?

They usually stay within a couple of kilometres of the nest or roost, though they may go further when food is scarce. They cover several kilometres in total while quartering back and forth.

Do male and female Barn Owls hunt together?

No, they hunt alone. But the male covers most of the feeding early in the nesting season, and both adults are hunting hard once the chicks are growing.

How do Barn Owls defend themselves?

A threatened owl tries to look as big and frightening as possible. It hisses, sways its head from side to side and spreads and droops its wings. If cornered, it may even flip onto its back and present its talons.

What eats Barn Owls?

Adults have few natural enemies, though larger birds of prey and other owls can be a danger. Eggs and chicks are at greater risk from stoats, rats, foxes, other mammals, and some birds. Roads are a much bigger killer.

Do Barn Owls get on with other birds?

Often they compete. Jackdaws, stock doves and Tawny Owls also like cavities and barns, and they can take over sites or harass the owls. Tawny Owls in particular can be a real threat.

Are Barn Owls dangerous to people or pets?

Not to people, and they're very unlikely to bother pets. Their prey is mostly small animals such as voles and mice. A nesting owl may hiss to warn you off, but the best approach is simply to give it space.

What is the Barn Owl's habitat?

Rough, tussocky grassland with lots of voles, such as field margins, hedgerows, ditches, riverbanks, rough meadows and marshes. They avoid uplands, dense woodland and busy roads.

Where can you find Barn Owls in Britain and Ireland?

Mainly lowland farmland and river valleys in England and Wales, and parts of southern and eastern Scotland. They're scarcer in uplands and the far north, and they're rare in Ireland.

Do Barn Owls live in towns?

Seldom. They prefer open countryside with rough grass, though a few use the edges of towns where there's suitable hunting ground.

Where do Barn Owls roost, and where do they nest?

They use the same kinds of places for both: old barns and farm buildings, church towers, hollow trees, ruins and nest boxes. They build no nest, and eggs are laid on a bare floor, often on a bed of pellet debris.

Do Barn Owls roost together or flock?

A male and female often roost together, especially in winter and the breeding season. Otherwise, they're solitary and don't flock, apart from family groups.

How do you spot an active roost or nest?

Look for white droppings ("whitewash") under the entrance or perch, along with pellets and feathers. You may also see owls flying in and out at dusk, or hear the chicks hissing at night.

How does the Barn Owl survive the winter?

It doesn't hibernate or migrate, and stays active all year. It often hunts in daylight when food is scarce, and uses several roosts. Prolonged heavy rain, snow and freezing weather are its biggest threats, because they make hunting difficult.

How big is a Barn Owl's territory?

It varies with habitat and food supply. The hunting range is usually within a couple of kilometres of the nest, so roughly a few square kilometres.

What's the best time and place to see a Barn Owl?

Try dusk on a calm, dry evening beside rough grassland, field edges or riverbanks. Late summer is good because the parents are busy feeding young, and sometimes you can spot one hunting on winter afternoons.

How do you attract a Barn Owl to your land?

Think about food before housing. Leave ribbons of tall, tussocky grass along hedges, ditches and field edges, wide enough for voles to thrive, and don't mow them every year. Keep hedgerows and old trees, avoid poisons, and keep floodlights away from hunting areas. A nest box then completes the job by providing the owls with a place to raise chicks.

How do you make a nest box attractive?

Site it somewhere quiet, dry and dark, close to rough grassland, with a clear flight path to the entrance hole. Keep it out of the prevailing wind and midday sun, and away from busy roads.

How big should a Barn Owl nest box be?

Think of it as a small room rather than a birdhouse, because a whole family of chicks has to fit, grow and flap about inside for weeks. A nest chamber floor of 0.2 to 0.5 m² is a good range. A floor about 60 cm square is comfortable. Bigger is better if you can manage it, although a huge box is hard to put up.

How big should the entrance hole be?

Aim for a roughly square opening about 13 cm across, with about 10 cm as the minimum and 15 cm as the maximum. Barn Owls slip through easily, but a smaller hole helps keep out bulkier birds and animals. Going much larger invites trouble.

What are the design considerations for a nest box?

Safety comes first. Owlets are curious and clumsy, so the box should work like a deep well, with the entrance well above the floor so small chicks can't reach it. The drop from the bottom of the hole to the floor should be at least 46 cm. If the box is shallower than that, add a raised-edge platform outside so the young can exercise their wings without falling. Use untreated timber, and make sure a lid or panel opens to clear out old nest material.

How high should you put a nest box up?

Well above head height, and out of reach of predators. On a tree, at least 3 m above the ground is recommended. Pole boxes typically sit higher, with about 4.5 m of the pole standing above ground after the base is buried 1.5 m deep.

Do you need multiple nest boxes in the same area?

Not necessarily, but recommended. Barn Owls aren't colonial, and two boxes in the same tree or building won't be used at once. A second box, a good distance away, can provide a pair with a spare roost or nest site.

How long does it take for a new nest box to be used?

It can take a few months or a few years, and some are never used. Good hunting habitat nearby is the deciding factor.

Will a Barn Owl use a nest box in a garden?

Only if it's a large garden bordering plenty of rough grassland. A typical small or suburban garden won't have enough hunting ground.

Do nest boxes need cleaning?

The pellet level can become too high, so yes, they do, but not very often. Have a look once a year, outside the breeding season and after making sure it's empty, look inside and clear out any old bedding, pellets and debris. Left to build up, it makes the box shallower and less safe for chicks. Wear gloves and a dust mask, especially if jackdaws have been using it.

Are Barn Owls good for farmers?

Very. A family of owls eats a large number of rodents over the course of a year, which helps keep crop-damaging pests in check. They won't solve every rodent problem, but they're a free and natural form of pest control.

Can you keep a Barn Owl as a pet?

Absolutely not! Wild Barn Owls are protected, and taking one from the wild is illegal. Captive owls also need a very large aviary, a specialised diet and years of committed care, and there are legal rules to follow. It's kinder to help wild owls or visit a reputable sanctuary.

Why did Barn Owl numbers fall in the past?

Several things combined: the loss of rough grassland where they hunt, the removal of hedgerows, old barns being converted or falling down, pesticides, and road deaths. Conservation work such as nest boxes and better grassland management has helped numbers recover in many areas.

Are roads dangerous for Barn Owls?

Yes. Grass verges are full of voles, so owls hunt along them and fly low across the tarmac. Vehicle collisions are a leading cause of death, especially for young owls dispersing.

How big is the Barn Owl population?

No one can give a firm figure. Only one reliable national estimate has ever been made, in 1995–97, at almost 4,000 pairs. Since then, figures like about 9,000 pairs have been quoted, but they're less solid and much debated. What's clearer is the year-to-year swings: monitoring groups found around a quarter fewer active nests than average in 2025, the worst breeding season for a decade.

Is the Barn Owl a rare bird?

It's a specialist and doesn't occur everywhere, but it's not as rare as it once was. It is no longer on the UK conservation concern Amber list. It remains fully protected by law, and its numbers still rise and fall with the weather and vole supply.

Are Barn Owls a protected species?

Yes. They're listed on Schedule 1 of the Wildlife and Countryside Act 1981, which protects them and their nests from disturbance and harm.

Why are some Barn Owls ringed?

Rings carry unique numbers. They allow trained, licensed ringers to study survival, lifespan, movement and breeding success. Found rings can be reported to the BTO.

Can you go near a Barn Owl nest?

Not without a licence. It's an offence to disturb a Barn Owl at or near an active nest, so watch from a distance. If you're planning building or land work near a roost or nest, take advice first.

Can I put a camera in a nest box?

Be careful. Disturbing an occupied nest is an offence. Fit cameras outside the breeding season, or with help from an experienced, licensed person, and choose low-disturbance equipment.

Is it okay to photograph a Barn Owl nest?

Not if you'd be disturbing the birds. Stay well back, never use flash or recordings to lure them, and don't share exact nest locations publicly.

What should I do if Barn Owls use a building I'm converting?

Get advice from an ecologist or a group such as the Barn Owl Trust before doing anything. Work may need to wait until the breeding season is over, and you'll usually need to provide a replacement roost or nest space.

How do I report a Barn Owl sighting or nest?

Tell a local Barn Owl group or a conservation charity, and keep exact locations private. If you find a ringed bird, report the ring number to the BTO. Sightings can also be logged on citizen-science apps.

How can I get involved in helping or monitoring Barn Owls?

Contact a local Barn Owl group or a charity such as the Barn Owl Trust. You could help create rough grass habitat, put up a nest box with expert advice, or report sightings. Nest checks and ringing are performed only by trained, licensed personnel, but volunteers can often help in other roles.