What do little owls eat?
Invertebrate prey mostly moths, beetles and earwigs – makes up the vast majority of little owls’ diet. But when a shower starts, the birds quickly switch to earthworms, and continue to bring these to the nest as long as it rains. With a relatively wide diet, their approach to hunting depends on prey availability.
A key adaptation for little owls is an incredibly strong tarsus – there are even anecdotal reports of them successfully taking small rabbits.
Superb hearing enables little owls to locate the rustles and squeaks of mice and voles with an accuracy of up to 99 per cent.
When do little owls hunt?
Excellent is another little owl feature: their retinas have lots of rod cells for night vision, and enough cones for colour vision in daylight. Their retina cells are more like those of diurnal raptors than other owls, but by day their visual acuity is lower than diurnal raptors. This places them somewhere between night and day hunters.
Where can little owls be seen?
Fence posts and walls are popular perches for little owls, from where they pounce on their prey. They can also be seen running along the ground in pursuit of ground beetles and small mammals.
Important habitat for little owls are rural villages, parkland and lowland farmland. The birds often choose a territory with some short and rough grasslands, hedgerows, mature trees and old farm buildings.
What do little owls look like?
Markings on the back of a little owl’s head are broad and pale, similar to those on the front, an adaptation to deter ambush attacks by other owls and sparrowhawks. Little owls are also predated by foxes, badgers and other raptors.
Undulating flight means little owls are often mistaken for mistle thrushes and green woodpeckers, which are of similar size and, like the owls, often occur in farmland and open grassy areas.
What do little owls sound like?
Vocalisations by little owls can resonate several kilometres on a still night. Adult little owls can make over 20 different vocalisations, including their shrill ‘goooek, goooek’ and ‘kweew, kweew’ sounding calls.
How do little owls cope in cold weather?
Fat reserves are proportionately greater than in barn owls, so little owls are better able to cope with cold weather. But prolonged snow is a major cause of mortality for both first-year owls and adults.