Stirling White Tash Haggis

Morphology

A body suited to the woodland floor

The White Tash has a compact, nearly spherical body carried close to the ground. Adults measure approximately 20–23.5 centimetres across and 21.5–25 centimetres high, weighing between 1.1 and 1.5 kilograms. They are usually heaviest in September, after feeding heavily before the autumn tash moult.

These proportions suit the uneven ground beneath mature trees. Moss-covered roots, fallen branches and deep leaves form a landscape of narrow passages and sheltered hollows. A low centre of gravity helps the White Tash remain steady as it moves through them, while its rounded body retains warmth during cold, damp evenings.

First-winter animals are smaller and carry a shorter, softer tash. Mature individuals develop a fuller spread of bristles, giving the face its familiar, distinguished appearance.

The dark coat

The coat is dense, weatherproof and deep brown. Depending on the light, it may appear chestnut or almost black. Its colour blends with damp earth, decaying timber and the shadows beneath roots.

Seen from behind, a resting White Tash can be remarkably difficult to distinguish from its surroundings. Seen from the front, its white tash gives it away.

The body coat renews gradually through late spring and summer and becomes thickest in winter. The tash follows a separate cycle, with a much more noticeable annual moult.

The Tash

Far more than a distinguished face

The tash is a working structure. Its stiff, sensitive bristles help the White Tash find food, communicate, settle encounters with its own kind and attract a mate.

The longest bristles grow at the outer ends, sweeping away from the muzzle. Shorter, closely packed bristles sit beneath the nose. A standard adult tash spans approximately 58 millimetres, although particularly fine examples exceed 66 millimetres.

Small movements of the upper lip change its angle. A feeding White Tash lowers its tash towards the leaves. A resting or listening animal may hold it level. When it raises the bristles into its breath, the tash becomes an instrument.

A face that can be recognised

Each White Tash has its own tash outline, with distinctive curves, uneven edges and differences at the tips. That outline returns after each annual moult, allowing Rangers to recognise individuals from clear photographs taken face-on.

The tash also receives considerable attention from its owner. Morning and evening grooming involves drawing the bristles against moss, bark and tree roots until they are clean and evenly arranged. After wet weather, moss can leave a greenish stain, making the task rather longer.

A well-kept tash is central to the animal’s daily life. Its appearance reflects the condition of a structure used almost constantly.

Habitat & Ecology

A life among old trees

The White Tash favours mature, undisturbed woodland with deep leaf litter, thick moss and established trees. The woods around Aberfoyle and the Queen Elizabeth Forest Park form the centre of its range, with further habitat around Loch Katrine, Loch Achray, Loch Venachar and the Lake of Menteith.

Each part of this woodland has a purpose. Fallen leaves provide feeding ground. Moss banks offer resting places and grooming surfaces. Old roots and fallen timber shelter sleeping animals and conceal nests.

Within these woods, the boundary between trees and open ground is particularly important. A quiet path, a wooded loch shore or a sheltered clearing gives the White Tash somewhere to feed in the last light of the day. In spring, slightly raised ground along these edges also provides a calling position.

Open fields are generally crossed between woodland patches rather than occupied for long periods. The White Tash belongs to the shelter of the trees.

Dawn, dusk and the hours between

The White Tash is most active at dawn and dusk. Its evening usually begins with grooming, followed by a whistle announcing its presence. It then feeds along the woodland floor until the light fades.

At first light, it emerges for another feeding period before returning to shelter.

Through much of the day and the middle of the night, it rests in a familiar hollow beneath roots, fallen timber or a moss bank. It curls into a rounded shape and folds its tash carefully beneath its chin.

Winter brings longer periods of rest, but the White Tash remains active. Its new bristles are growing, and feeding must continue.

Behaviour

Sweeping the woodland floor

The White Tash finds much of its food by lowering its tash into the leaf litter and moving its head slowly from side to side. The bristles comb through the surface, detecting movement and objects beneath the leaves.

Beetles, larvae, woodlice and earthworms form an important part of its diet. Fungi, beech mast, acorns and fallen hazelnuts provide further food as the seasons change.

This feeding behaviour leaves a distinctive sign: a narrow strip of disturbed leaves running beside a path or along the foot of a bank. Rangers call this a sweep line.

A sweep line is worth noticing, but it is a clue rather than a complete sighting. The animal responsible may already be resting somewhere nearby.

The famous pause

When a White Tash notices a person, it often stops, turns and faces them. For several seconds, it holds its position with the tash presented squarely forwards.

The reason for this pause remains uncertain. It may allow the animal to assess the disturbance before choosing where to go. Whatever its purpose, it gives the observer an unusually clear view.

The pause ends on the White Tash’s terms. Once satisfied, it turns and withdraws into cover.

For the spotter, the correct response is simple: remain still, keep your distance and allow the encounter to finish naturally.

The voice of the tash

Much of the White Tash’s communication depends on breath passing across its bristles. Changing the angle of the tash changes the sound.

Its four adult calls serve different purposes:

• Contact hum: a quiet, steady sound used between nearby animals.

• Tash whistle: a clear call announcing its presence, often at the beginning of the evening.

• Bristle rattle: a short, dry burst used when two White Tash meet and neither immediately gives way.

• Courtship swoop: a rising and falling call heard during late winter and spring.

The courtship swoop can carry through approximately 200 metres of woodland. For a patient listener, it may reveal a White Tash long before its pale bristles become visible.

Field identification

Scientific designation: Haggii s. albomystax
Common name: Stirling White Tash
Species number: No. 006
Typical habitat: Mature woodland, mossy roots, deep leaf litter and wooded loch shores.
Key characteristics: Compact rounded body, dense dark-brown coat and a distinctive white tash across the muzzle.
Characteristic behaviour: Stops and faces an observer before withdrawing.
Feeding sign: Narrow sweep lines through fallen leaves.

Growing into the tash

Courtship begins in late winter and reaches its height in April. Males call from slightly raised ground at the woodland edge, producing the rising and falling courtship swoop.

An interested female answers with a shorter call. As the exchange continues, the animals move closer through the trees, eventually replacing their carrying calls with quiet contact hums.

Nests occupy dry, concealed places beneath old roots, under fallen timber or within moss banks. They are lined with dry leaves and moss and should remain undisturbed.

Young White Tash begin life with a bare muzzle. A soft, pale patch develops during the first summer, then stiffens into bristles through the first winter.

Their earliest calls are uneven. Hums develop into whistles, followed by attempts at the bristle rattle. The full courtship swoop comes later, when the tash and the control needed to play it have developed.

A young White Tash’s small, slightly crooked tash is the beginning of a much more distinguished face.

Woodland Year

A changing face through the seasons

Late winter and spring
The new tash becomes full and stiff. Calling increases, reaching its peak during April courtship. This is the best season to listen for the White Tash along woodland edges.

Summer
Young animals follow their mothers through the leaves. Adults continue feeding and grooming, while their bristles gradually wear. Dense vegetation makes them harder to see.

September
Feeding intensifies as nuts, fungi and other autumn foods become available. The White Tash builds reserves before the annual moult and may be seen feeding in the evening light.

October
The old tash is shed. Feeding becomes more difficult, calling declines and animals withdraw without their usual pause. This is a time to give them privacy.

November and December
New bristles grow. By December, the tash is largely restored, and clear whistles begin returning to the winter woods.

A distinguished face of Scotland

The Stirling White Tash depends on the quiet complexity of old woodland: leaves left to gather, moss allowed to spread and fallen trees remaining where they lie.

Its dark coat offers concealment. Its sensitive tash finds food beneath the leaves. Its calls carry between the trees, connecting animals that may remain hidden from one another.

To understand the White Tash, watch the woodland edge as the light begins to fade. Listen before moving. Look beneath the level at which you would normally search.

And if a white tash turns towards you, allow its owner a moment to decide what it thinks.