How to spot water voles along quiet riverbanks

By Understanding chalk streams and their fragile ecology
Comments 35
1 Sep 2026

How to spot water voles along quiet riverbanks

Why field signs matter more than sightings

Water voles are among the UK's most threatened mammals, and they have good reason to be shy. They spend much of their time in dense bankside vegetation or underground, slipping into the water at the first hint of danger. A glimpse of a swimming vole — often announced by a loud, distinctive plop — is a treat, but you cannot rely on it. The good news is that water voles leave behind a trail of evidence. Learn to read burrows, latrines and feeding stations and you can confirm their presence along a quiet riverbank without ever seeing the animal itself.

Reading the bank: burrows and runs

Water voles dig extensive burrow systems into soft earth banks. The entrances are the most obvious sign, though they can be easy to overlook among tree roots and overhanging grass.

Look for round holes roughly 4–8 cm across, often slightly wider than they are tall. They are usually cut into steep banks, sometimes in several tiers.
Entrances may sit just above the waterline or open below it. Underwater entrances are common and help the vole escape predators.
Around active burrows you may find a grazed "lawn" — short, nibbled grass where the vole has been feeding close to home.
Runs are flattened tunnels through vegetation, about the width of a vole, leading from the water's edge to burrows or feeding areas. They often look like miniature badger paths through nettles, sedges and reeds.

Fresh soil around an entrance, or a burrow that is clear of cobwebs, suggests recent use. Old, cobwebbed holes may be abandoned.

Latrines: the surest sign

Water voles are territorial, and they mark their patches with latrines — piles of droppings left in prominent places. These are the most reliable field sign, because the droppings have a distinctive shape and colour.

Droppings are cylindrical with blunt, rounded ends, about 8–12 mm long. They are usually dark green or brown, fading to grey as they age.
Latrines are often placed on flat stones, logs, tussocks or bare earth at the water's edge, sometimes on a raised ledge just above the water.
Fresh droppings may have a faint hay-like or musky smell. Old ones crumble easily.
Compare with brown rat droppings, which are pointed at one or both ends, shiny black when fresh, and smell unpleasant. Rat droppings are usually scattered, not piled neatly.

A latrine is a strong indication that a water vole is resident nearby. If you find several, you are almost certainly in an occupied territory.

Feeding stations and nibbled stems

Water voles are vegetarians, and they leave tidy evidence of their meals. Look for feeding stations — small piles of cut stems and leaves, often on a flat stone, a bank ledge or a floating raft of vegetation.

The cut ends of stems are the giveaway. Water voles snip plants at a distinctive 45-degree angle, leaving a clean, chisel-like cut. You may need to look closely, but once you spot it, it is unmistakable.
They often eat only the tender base or pith, leaving short lengths of stem, 2–5 cm long, scattered around.
Favourite foods include sedge, rushes, reed canary grass, willowherb, fool's watercress and brooklime. Look for these plants growing along the water's edge.
Feeding stations can accumulate into noticeable piles. On quiet rivers, you may also see floating rafts of cut vegetation drifting downstream.

Tracks and other clues

Muddy banks are a gift for trackers, especially after rain or on a falling water level.

Water vole footprints are small and star-shaped. The hind foot is up to about 3.5 cm long and often shows five toes; the front foot is smaller, around 2.5 cm.
Listen for a loud "plop" as a vole dives into the water. It is heavier and more explosive than the splash of a field mouse or a rat.
Swimming voles show only their head and back, with a blunt, rounded nose. Rats swim with their nose higher and their tail trailing visibly.
Beware of lookalikes. Brown rats dig similar burrows, but their droppings and tracks are different. Field voles live in grassland and rarely burrow into steep waterbanks. Mink and otter tracks are much larger, and mink scats often contain fish or bird remains.

When and where to look

Water voles favour slow-moving or still freshwater with plenty of bankside cover: lowland rivers, ditches, canals, ponds and marshes. They are scarcer in fast-flowing upland streams and in heavily shaded or heavily grazed banks.

The best time to look is late winter and early spring, before new vegetation hides burrows and latrines. Early morning is quietest, and voles are often active then.
Approach slowly and keep low. Avoid trampling bankside plants, which provide both food and cover.
Keep dogs on a lead near burrows, and never poke or dig into holes. Disturbance can cause voles to abandon a site.
If you find signs, record them. Many counties have a local records centre or water vole recorder who will welcome your notes, photographs and grid references. This helps protect the places where voles still hang on.

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5 Comments

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- John Abraham says Jul 21, 2024 at 10:00am
  
  I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system
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  - Robert Sonnysays Jul 21, 2024 at 10:00am
    
    I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system
    Reply
Robert Sonny says Jul 21, 2024 at 10:00am

I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system
Reply

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