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What’s that swan? Your guide to the UK’s swan species

Get to know these snow-white beauties with our handy ID guide.

Whooper Swan, swimming
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Meet the UK’s swans

Think of a swan and you’ll probably picture a magnificent Mute Swan – the UK’s largest waterbird. But did you know that two other species visit our shores too? While Mute Swans live here all year round, Whooper and Bewick’s Swans are seasonal visitors that fly all the way from their breeding grounds in the far north to spend the winter here.

So how can you tell them apart? Read on to find out!

Mute Swan

Elegant and graceful, Mute Swans are one of the UK’s most iconic and familiar birds, often seen gliding across village ponds or cruising down canals. But don’t let their serene appearance fool you! During the breeding season they’re incredibly protective of their patch, and will see off almost anything that gets too close, from rival swans to curious ducks.

ID tips

  • The UK’s largest swan
  • Long, graceful neck, usually held in an elegant S-shape
  • Bright orange beak, with a large black knob that’s bigger in males
  • Adults are white, juveniles are grey-brown with a dull pinkish beak

What to listen for

Despite their name, Mute Swans aren’t actually silent. They often grunt softly while feeding and will hiss loudly if disturbed – especially when protecting their young. While flying, their wings make a dramatic whooshing sound, so you might hear them coming before you see them!

Mute Swan

xeno-canto / Fraser Simpson

Behaviour and feeding

Mute Swans spend much of their day searching for food, dipping their heads underwater and sometimes tipping forwards so that only their tail feathers poke up above the surface. They feed mainly on aquatic plants, but also graze on grass in nearby fields and meadows.

Nesting and eggs

Each spring, pairs perform a beautifully synchronised courtship display out on the water, bowing to each other with wings held aloft, before entwining their necks, often forming a heart shape.

Together, the pair builds an impressive nest from reeds and other plant material, usually hidden among waterside vegetation. The female lays a clutch of four to seven eggs, which she incubates while her partner stands guard.

When to see them

Mute Swans live in the UK all year round.

Where to see them

Mute Swans are widespread across the UK and you could see one on almost any stretch of fresh water, including lakes, rivers, canals and urban park ponds.

Mute Swan, cygnet tucked into its parents feathers
One tired grapefruit!
Did you know?

Newly hatched cygnets often hitch a ride on their parents’ backs for warmth, protection and to save energy. Paddling is tiring work when you’re only the size of a grapefruit!

Bewick’s Swan

When you’re wrapped up in your winter woollies, it can be hard to believe that some birds come to the UK during winter to escape the cold, but it’s true! In the remote tundra of Siberia, where Bewick’s Swans breed, temperatures can drop to an icy -50oC, making our winters seem positively balmy by comparison.

Bewick’s are the smallest swans to visit the UK and also the rarest. Each bird has a distinctive black-and-yellow pattern on its beak – a bit like our fingerprints – allowing scientists to identify individuals and track family groups year after year.

ID tips

  • The UK’s smallest swan
  • Shorter, straighter neck than a Whooper Swan
  • Black and yellow beak – but with less yellow than a Whooper Swan
  • Young birds have a pinkish beak
  • Adults are white, juveniles are pale grey
  • Head is more rounded than a Whooper’s

What to listen for

Bewick’s Swans have a soft, bugling call that’s more musical than a Whooper’s. They’re very vocal birds and families will call to each other while flying, to ensure they don’t get separated.

Bewick's Swan

xeno-canto / Richard Dunn

Behaviour and feeding

During migration, Bewick’s Swans travel in close-knit family groups and cygnets learn the route, as well as important stopover and feeding sites, from their experienced parents. Some youngsters stick close to their parents for several years, until they find a partner of their own.

Once in the UK, these Arctic visitors roost on open water overnight, then venture out to feed on leftover crops in nearby fields during the day. They also eat aquatic plants, like pondweed.

Nesting and eggs

Bewick’s Swans breed on the tundra of Siberia. With the Arctic summer lasting only a few short months, they face a race against time to raise their chicks before winter closes in. The pair builds a nest together, and the female lays three to five eggs, which both parents help to incubate.

When to see them

Bewick’s Swans usually start arriving in the UK from November and depart in February and March.

Where to see them

For the best chance of seeing them, head to the wetlands and low-lying farmland of eastern England and the Severn Estuary. The RSPB’s Ouse Washes and Nene Washes nature reserves in Cambridgeshire are great places to spot them.

Bewick's Swan, adult feeding in field
An end to the Swan Shire Summers?
Did you know?

Bewick’s Swans are becoming a rarer winter sight in the UK. Their numbers have fallen dramatically in recent decades, partly as a result of climate change and the warmer winters it is bringing. With more wetlands remaining ice-free closer to their breeding grounds, many swans no longer need to make the long journey south to our shores.

Whooper Swan

Like Bewick's Swans, Whooper Swans are winter visitors to the UK. Every autumn, thousands leave their breeding grounds in Iceland, with smaller numbers arriving from Scandinavia, to escape the harsh northern winter.

To get here, they fly non-stop across hundreds of miles of open ocean and can reach astonishing heights. An airline pilot once reported seeing a flock of swans, thought to be Whoopers, at about 8,000 metres (26,250 feet) – that’s almost as high as Mount Everest!

ID tips

  • Adults are white, juveniles are pale grey
  • Long, slim neck – usually held with a slight curve near the base
  • Bright yellow beak with a black tip – the yellow forms a triangular patch (a bit like a wedge of cheese!) that extends past the nostrils
  • Young birds have a pink and black beak
  • Compared to a Bewick’s Swan, the Whooper has a longer beak with more yellow, and is larger overall

What to listen for

Whooper Swans have a call that’s hard to miss – imagine a child trying to play the trumpet and you’re not far off! They often call while flying in groups, creating a lively, tooting chorus, that sounds a bit like an out-of-tune brass band playing overhead.

Whooper Swan

xeno-canto / Matthias Feuersenger

Behaviour and feeding

During the day, Whooper Swans often gather in fields to nibble grass and feast on leftover potatoes and grain. As evening approaches, they head back to wetlands, where they feed on aquatic plants and roost out on the open water overnight.

Nesting and eggs

The vast majority of Whooper Swans nest on the tundra in Iceland and Scandinavia, but some pairs have been recorded breeding in the UK, particularly in Shetland and the Outer Hebrides. They build their nest on the ground and the female lays three to five eggs.    

When to see them

Whooper Swans usually start arriving in the UK in October and leave again in March and April.

Where to see them

Their size and loud calls make Whooper Swans easier to find than many winter visitors to the UK, but you’ll need to head to the right places – mainly wetlands and fields in Ireland, Scotland, northern England and East Anglia.

Top spots to see them include RSPB Loch of Strathbeg in Aberdeenshire, Loch Leven in Perth and Kinross, Ouse Washes in Cambridgeshire and Portmore Lough in County Antrim.

Whooper Swan, pair in flight
I'ts a bird, it's a plane, no it's a king-sized bed...wait!
Did you know?

A Whooper Swan’s wingspan is wider than a king-sized bed is long!

Quick swan facts

What are male and female swans called?

Male swans are known as cobs and females are called pens. Young swans are cygnets.

What is a group of swans called?

A group of swans is usually called a flock, but there are some more unusual names too. A gathering of swans on land is known as a bevy, while a V-shaped formation of swans in flight is called a wedge.

What do swans eat?

Swans are mainly vegetarian. They feed on aquatic plants, grasses and other vegetation growing in wetlands. They'll also graze in fields and eat leftover crops, such as grain and potatoes. While most of their diet is plant-based, they occasionally eat small aquatic animals, such as insects and snails.

Whooper Swan, group feeding in sugar beet field

Can swans fly?

Absolutely. In fact, they’re some of the heaviest flying birds in the world, with the average male Mute Swans tipping the scales at over 10.5kg. Because of their weight, they need a long runway for take-off. You’ll often see them pattering across water while beating their wings rapidly, to build up enough speed and lift.

Once airborne, Whooper and Bewick’s Swans can travel thousands of miles during migration.

How long do swans live?

If they make it to adulthood, swans typically live for about nine to 10 years. But the oldest known Mute Swan reached the grand old age of 40!

Do swans mate for life?

Many Swans form long-lasting pair bonds and remain with the same partner for life, which is why they're often seen as a symbol of love and devotion. Working as a team, pairs defend their territory, build a nest and raise their cygnets together. However, if one bird dies or a pair fails to breed successfully, they may find a new mate.

Mute Swan cygnets, group resting at the side of a lake

Frequently asked questions about swans

When do swans nest?

  • It depends on the species. Mute Swans, which live in the UK all year round, usually begin nesting in spring. Whooper and Bewick's Swans are winter visitors, so they leave the UK before the breeding season starts and travel north to nest in Iceland, Scandinavia and Siberia. Their cygnets hatch during the short summer season, before the return of colder weather.

How long do swan eggs take to hatch?

  • Mute Swans usually incubate their eggs for 34 to 44 days. The incubation period is a little shorter for Whooper Swans at 31 to 42 days, and 29 to 30 days for Bewick’s Swans.

Do swans migrate from the UK?

  • Mute Swans stay in the UK all year round, but Whooper and Bewick's Swans make epic journeys between the UK and their breeding grounds. Each spring, they leave our shores and head north, with Whoopers nesting in Iceland and Scandinavia, and Bewick’s in Siberia.

How can you tell the difference between a male and female swan?

  • At first glance, male and female swans can look almost identical, but take a closer look and you'll start to spot some subtle differences. In Mute Swans, one of the best clues is the black bump, or knob, at the base of their orange beak. This is usually larger and more prominent in males, particularly during the breeding season. Male Mute Swans also tend to be bigger and heavier than females, with a thicker neck and a more powerful appearance.

    Bewick's and Whooper Swans are trickier. Males and females share the same black-and-yellow bill pattern, making them much harder to tell apart at a glance. Males tend to be slightly larger and chunkier, with a thicker neck, while females often look more delicate.

Are swans protected?

  • Yes. All three swan species found in the UK are protected by law, which means it's illegal to intentionally harm or disturb them, or interfere with an active nest.
Mute Swan, adult swimming in reedbed
Mute Swan
Why do swans keep landing on roads? 

In November's Ask an RSPB expert, our expert, Mey Duek, answers some of this month's most commonly asked questions.