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More about our AI transparencyWhy do Tawny Owls call so often in autumn? Find out what lies behind their night-time sounds and how to observe these owls in the garden.
The eerie, drawn-out call that creates a spooky night-time atmosphere in many films often comes from the Tawny Owl (Strix aluco). Owls are particularly vocal in autumn: established birds make their territories heard, while young Tawny Owls search for territories of their own. Courtship calls are also part of their autumn repertoire. So if you hear an owl at night, you may be hearing territorial communication or contact between mates—not necessarily a single bird simply “howling”.
For garden owners, the surroundings are especially important. As well as woodland, Tawny Owls use parks and large, well-structured gardens, provided they have suitable old trees with cavities or appropriate nest boxes. Quiet observation and retaining older trees and shrubs can help you understand and support their habitat.
The Tawny Owl is an owl that is mainly active at dusk and at night. To human ears, its drawn-out song often sounds like a single, haunting cry. In fact, the familiar pattern can consist of calls from both members of a pair. The British Trust for Ornithology describes the classic exchange as a duet: the female replies with a “too-whit”, while the male gives the hooting “too-woo” part. The way the calls are rendered in words varies between descriptions; the key point is that a familiar pattern does not necessarily come from just one bird.
There is also a shorter, sharp call, often rendered as “ku-witt”. According to the species profile from the Bavarian Society for the Protection of Birds and Nature (LBV), it can also be used to make contact. Both sexes can give this call. A third sound may come from young Tawny Owls: according to the LBV, young birds that have left the nest and are sitting on branches as fledglings repeatedly give a harsh, rasping “kszik”.
It is not always easy to distinguish these calls outdoors. Distance, echoes and other sounds can alter what you hear. A single “hoo” is therefore not enough to determine the bird’s sex, age or situation reliably.
For Tawny Owls, autumn is not a quiet pause between breeding seasons. According to the British Trust for Ornithology, they are particularly vocal at this time of year. Established pairs may defend their territory against young birds looking for one of their own. Their calls make boundaries audible that remain invisible by day.
Courtship and territorial calls are also part of what happens in autumn. The LBV describes them as particularly common in autumn and late winter. This may seem early if you are thinking of the later egg-laying period: for North Rhine-Westphalia, the State Agency for Nature, Environment and Climate (LANUK) gives March as the usual start of breeding, although it sometimes begins as early as February. There are therefore often several months between autumn calling activity and breeding.
Tawny Owls do not simply move to winter quarters in autumn. In North Rhine-Westphalia, the LANUK lists them as resident throughout the year. “Resident” means that a species generally stays in the area rather than regularly moving to another region. This does not rule out individual movements; the term describes the species’ general migration pattern.
A call from one group of trees and a reply from another direction can give the impression that two Tawny Owls are facing one another. This is a useful way to picture it, but it is not a reliable map: volume alone cannot tell you the exact distance or the boundary of a territory. The song mainly shows that communication is taking place.
In North Rhine-Westphalia, the LANUK gives territory sizes of around 25 to 80 hectares. This is a regional figure, not a fixed size for every Tawny Owl. Territory size and habitat therefore cannot be mapped directly onto the area of a single garden. A garden may be part of a wider landscape where trees, parks and other suitable features work together.
Tawny Owls also depend closely on suitable resting and breeding sites. According to the LBV, they use tree cavities, old barns and nest boxes; the habitats it lists include parks, cemeteries and older gardens. The LANUK highlights old, open broadleaved and mixed woodland, as well as parkland and well-structured gardens with tree cavities or suitable nest boxes. So what matters is not just whether a garden is large, but whether it forms part of suitable surroundings and offers appropriate features.
You do not need special equipment to listen out for Tawny Owls. Patience, a quiet place to observe from and caution when interpreting what you hear are what matter.
A wildlife-friendly garden can play a part if it sits within suitable surroundings. For Tawny Owls, old trees with cavities and suitable nest boxes can provide potential breeding sites. Retaining existing old trees is therefore particularly important, where they can safely be left standing. Parks and larger gardens are also listed as habitats they use.
Mentioning nest boxes is not a blanket recommendation to put one up anywhere. The species profiles cited describe the use of suitable nest boxes, but do not provide instructions on size, design, installation or location. If you are considering putting up a nesting aid, seek advice from a local nature or bird conservation organisation that can assess local conditions. A nest box also cannot replace the wider habitat.
As a first step, you could check whether there are old trees, parkland or other suitable features in your garden or nearby. Consider which old trees can be retained, and listen to see whether you regularly hear calls from the same direction. However, this does not automatically mean the owl is breeding in your garden: it may also be calling from a neighbouring park or woodland.
| What you hear | Possible meaning | Notes |
|---|---|---|
| Long, hooting call | Territorial or courtship communication | Particularly noted in autumn and late winter; a single call cannot be identified with certainty. |
| Short “ku-witt” | Among other things, a contact call | According to the LBV, both sexes give this call. |
| Repeated, rasping “kszik” | Call of a young Tawny Owl | May come from fledglings that have left the nest and are sitting on branches. |
| Calls alternating from several directions | Possible communication between birds | The direction may offer a clue, but does not reliably reveal the territory boundary. |
These written renderings are approximations. They are no substitute for a sound recording or expert identification, and what you hear may vary depending on the location and distance.
Not necessarily. A calling bird may be signalling a territory or keeping in contact without having its breeding site in your garden. Tawny Owl territories can extend well beyond individual garden plots. The range of 25 to 80 hectares given for North Rhine-Westphalia is a regional guide and should not be applied uncritically to other regions.
No. The female also takes part in the classic duet: according to the BTO, the female replies to the male’s call. In addition, both sexes can give the short contact call. Without a suitable observation, it is not always possible to identify the bird making a call.
Its drawn-out call works well as a sound effect to make a night-time scene feel dramatic. In nature, however, it is a form of communication, for example in connection with courtship or territorial behaviour. The short “ku-witt” call was also historically misunderstood as an ill omen, according to the LBV. That is a traditional interpretation, not the biological meaning of the call.
No. The sources mention suitable nest boxes as one possible type of breeding site, but not as a necessary measure for every garden. Whether a nesting aid is appropriate and how to install it correctly depend on local conditions. Retaining existing suitable trees is an obvious first consideration.
Not reliably. Volume and direction provide, at most, a rough impression. The surroundings can alter the sound, and a call does not automatically indicate the nearest tree or the location of a nest.
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Last updated: 10/10/2026. Corrections can be reported via the feedback form.