What Do Owls Eat?
From mice and voles to rabbits, snakes, and the occasional skunk — a complete guide to what owls actually eat, by species and season.
Owls are among the most efficient predators on the planet — silent flight, eyesight built for darkness, hearing that can pinpoint a mouse under snow. But the question "what do owls eat" has more than one answer, because with over 250 species spread across nearly every continent, owl diets vary dramatically by size, habitat, and species.
This guide covers every common owl species' primary diet, answers the specific "do owls eat..." questions people actually search for, and explains the remarkable biology behind how owls hunt and digest their prey. For more on the birds themselves, see our Types of Owls guide.
The Short Answer: What Do Owls Eat?
Owls are 100% carnivorous — every owl species eats only meat. Their diet is built around whatever small animals their size and habitat make available:
- Small mammals — mice, voles, shrews, rats, rabbits, squirrels, gophers, bats
- Birds — songbirds, ducks, grouse, and sometimes other owls
- Reptiles and amphibians — snakes, lizards, frogs
- Fish — several specialist species catch fish from water
- Insects and invertebrates — especially for smaller owls like screech-owls and elf owls
- Other animals — skunks, opossums, crayfish, scorpions, even small deer in large Eurasian species
A single Barn Owl family can eat over 2,000 rodents in a year, which is why farmers and landowners actively install owl boxes to encourage them. Owls swallow smaller prey whole, then later regurgitate pellets of undigestible fur, feathers, and bones.
Diet by Owl Species
Size and habitat are the two biggest predictors of what any individual owl eats. A Great Horned Owl and a Northern Saw-whet Owl live on the same continent but eat dramatically different meals. Here's a breakdown of the most common North American species.
Barn Owl
Roughly 90% small rodents — voles, field mice, shrews, and rats. Occasional small birds. Considered one of the most effective rodent-control species on earth.
Great Horned Owl
The widest diet of any North American raptor. Eats rabbits, skunks, opossums, squirrels, ducks, geese, snakes, frogs, and even other owls and hawks.
Barred Owl
Extremely varied — mice, voles, squirrels, rabbits, birds, snakes, frogs, fish, crayfish, and insects. Will hunt at any hour but prefers dusk and dawn.
Eastern Screech-Owl
Insects, earthworms, small mammals, and small birds. Known to catch bats, songbirds, frogs, and crayfish. Diet shifts seasonally — more insects in summer, more mammals in winter.
Snowy Owl
Eats up to 1,600 lemmings a year when available. Also takes ducks, geese, ptarmigan, and Arctic hares. Unlike most raptors, snowy owls never eat carrion.
Burrowing Owl
Primarily insects — grasshoppers, beetles, crickets, scorpions — plus small mammals, lizards, and birds. One of the few owls that hunts during daylight.
Do Owls Eat…? Common Prey Questions
These are the most-searched specific prey questions about owls. The short answers, in one place.
Do Owls Eat Snakes?
Yes. Great Horned Owls, Barred Owls, and Screech-Owls all eat snakes, including venomous species. Eastern Screech-Owls have even been documented bringing live blind snakes back to the nest — the snakes survive in the nest cavity and eat parasites that would harm the owlets.
Do Owls Eat Rabbits?
Yes — but mostly the larger owl species. Great Horned Owls, Barred Owls, and Snowy Owls regularly take cottontails and young jackrabbits. Small owls like screech-owls and saw-whets can't handle a full-grown rabbit but will take a young one if they can.
Do Owls Eat Squirrels?
Yes. Great Horned Owls and Barred Owls regularly hunt squirrels, often catching them early in the morning or just before dark when squirrels are still active. Gray squirrels, red squirrels, and flying squirrels all show up in owl pellets.
Do Owls Eat Bats?
Yes. Several owl species including Great Horned Owls, Barred Owls, and Eastern Screech-Owls hunt bats as they emerge from roosts at dusk. Owls are one of the few predators fast enough to catch bats in flight.
Do Owls Eat Other Birds?
Yes, regularly. Great Horned Owls will take ducks, geese, grouse, hawks, and even other owls. Smaller owls eat songbirds. This is one of the most common misconceptions — people assume owls only eat mice, but nearly all owls take birds when opportunity arises.
Do Owls Eat Fish?
Yes — though only certain specialist species. Asian Fish Owls and African Fishing Owls are dedicated piscivores. North American owls like the Barred Owl will occasionally take fish and crayfish from shallow water.
Do Owls Eat Foxes?
Rarely, and only the largest species. A Great Horned Owl can take a young fox kit, and large Eurasian Eagle Owls occasionally kill adult foxes. This is an unusual meal — not a staple.
Do Owls Eat Chickens?
Yes, if given the opportunity. Great Horned Owls are the most common culprit when a chicken disappears overnight. Secure chicken coops with a solid roof — not just open poultry netting — are essential in areas with owl populations.
Do Owls Eat Cats and Dogs?
This is one of the most emotionally charged owl questions — and the honest answer is rarely, but it does happen. Large owls, particularly Great Horned Owls and Snowy Owls, are powerful enough to attack small cats and toy-breed dogs. Attacks on pets under about 5 pounds have been documented. The International Owl Center confirms such attacks occur, though they are not routine.
Attacks are most likely in these conditions:
- Small pets (under 5 pounds) left outside after dark
- Areas with established Great Horned Owl territory
- Winter months when natural prey is scarce
- Near nest sites when owlets are being fed
The takeaway: A Great Horned Owl is not going to carry off a 40-pound Labrador. But if you have a 4-pound Yorkie or a small cat, don't leave them alone outside at night in owl country. The same goes for young owls — cats and unleashed dogs kill far more fledgling owls each year than owls kill pets.
"It's better for pets AND owls if cats stay inside and dogs stay attended. Small pets are at occasional risk from owls, and cats in particular are a major cause of owl mortality." — International Owl Center
How Owls Hunt
Owls use three main hunting strategies, often switching between them based on habitat and prey availability.
Perch and Pounce
Most common method. The owl sits motionless on a branch, stump, or fence post, waiting and listening. When prey is detected, it drops silently with talons extended.
Quartering Flight
Used by Barn Owls and Short-eared Owls. They fly low and slow over open fields in a methodical grid pattern, using hearing to pinpoint mice and voles in grass.
Hovering
Short-eared Owls and Snowy Owls will hover in place like a kestrel when a target is located, then fold their wings and drop straight down onto prey.
Ground Pursuit
Burrowing Owls and occasionally Barred Owls will actually run or hop along the ground chasing insects, frogs, or lizards — unusual but documented behavior.
What makes owls so lethal is the combination of silent flight (specially structured feathers muffle sound), binocular vision (their forward-facing eyes give depth perception most birds lack), and asymmetrical ear placement (one ear sits higher than the other on many species, allowing them to triangulate sound to the millimeter). A Barn Owl can catch a mouse in complete darkness using hearing alone.
Want Owls Hunting Rodents on Your Property?
A properly built and mounted owl box can attract Barn Owls, Screech-Owls, or Barred Owls to your property — each eating thousands of rodents per year. Most owl boxes fail because of poor placement and dimensions.
Read our complete owl box guide →Owl Pellets: What They Reveal
Because owls swallow small prey whole, they produce one of the most fascinating byproducts in the animal kingdom: owl pellets. Several hours after a meal, indigestible parts — fur, feathers, bones, teeth, claws — are compressed in the gizzard into a neat oval pellet and regurgitated at the roost.
Pellets are a scientific goldmine. By dissecting an owl pellet and identifying the bones inside, researchers can determine exactly what that owl has been eating. Many elementary science classrooms use sanitized, sterilized owl pellets to teach biology — and you can often identify specific prey species from the skulls alone.
Unlike hawks, which have stronger stomach acids that dissolve most bone, owls' digestive juices are less acidic. This leaves pellet contents remarkably intact — making them a primary research tool for understanding owl ecology.
What Do Baby Owls Eat?
Baby owls, called owlets, eat the same meat as their parents — but with help. For the first few weeks of life, the female stays on the nest while the male hunts and brings prey back. The female then tears the prey into small pieces and feeds them directly to the owlets.
By about 3–4 weeks old, owlets begin swallowing smaller prey whole and producing their own tiny pellets. By 6–8 weeks, most species are fledging — leaving the nest but still dependent on parents for food as they learn to hunt. Juvenile owls may continue receiving food from parents for weeks or even months after fledging.
Common first foods for North American owlets include:
- Small mice, voles, and shrews (torn up)
- Insects for smaller species like screech-owls
- Small birds — songbirds, nestlings
- Frogs and small reptiles
Important: If you find a baby owl on the ground, don't assume it's orphaned. Young owls often leave the nest before they can fly well and spend days on the ground or low branches while parents continue feeding them. Only intervene if the owlet is visibly injured or in immediate danger — and contact a licensed wildlife rehabilitator before handling it.
Do Owls Drink Water?
Surprisingly, most owls get all the water they need from their prey. Fresh meat is roughly 70% water, and an owl eating multiple small mammals per night is consuming plenty of fluid in the process. Wild owls are rarely observed drinking.
That said, owls will drink when water is available — especially in hot weather, during nesting, or when feeding mostly on drier insect prey. They typically drink by dipping their beak into shallow water and tilting their head back, the same way chickens do.
Seasonal Diet Shifts
Most owl species shift their diet noticeably through the year based on what's available.
Spring and summer: Rodent populations are at their annual peak, and insects are abundant. Screech-owls and smaller species eat heavily from insects. Migrant songbirds add to the menu.
Fall: Young-of-the-year rodents are plentiful and naïve — easy hunting. Owls bulk up before winter.
Winter: The hardest season. Insects disappear, many songbirds migrate, and deep snow makes ground-dwelling rodents harder to catch. Owls shift to whatever remains available — winter birds, rabbits, squirrels — and starvation is a real risk for owls that didn't build reserves. This is also when owl attacks on pets become more likely, as desperate birds expand what they'll try to catch.
How to Attract Owls to Your Property
If you want owls hunting on your land — and you should, given what a single owl family can do to a rodent population — the three highest-impact things you can do are:
- Install an owl box. Different species need different box dimensions, heights, and mounting locations. See our complete owl box guide for species-specific specs.
- Keep some dead trees standing. Snags provide roosting and nesting cavities. If a dead tree isn't a hazard, leave it.
- Stop using rodenticides. Secondary poisoning from rat poison kills thousands of owls every year. An owl that eats a poisoned rat dies from the same poison — and owls eat dozens of rodents per month.
- Maintain edge habitat. Most owls hunt along the edges between open fields and forests. Keep that edge varied — brushy strips, grass buffers, and scattered perches.
It can take one to three seasons for a new owl box to be discovered and occupied. But once an owl pair adopts your property, they'll often return year after year and hunt thousands of rodents in the process.
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