Think every bird at the beach is a seagull? Think again. Ireland is home to several species of gull — and once you know what to look for, they become much more interesting.

Is there really such a thing as a seagull?

Technically, no.

“Seagull” isn't the name of a species. It's a common term we use for a whole group of birds belonging to the gull family, Laridae.

And Ireland has quite a few of them.

Herring Gulls.
Black-headed Gulls.
Common Gulls.
Lesser Black-backed Gulls.
Great Black-backed Gulls.
Kittiwakes.
And several scarcer visitors that occasionally turn up on our shores.

So the next time someone points at a bird and says:

“Look at that seagull.”

You can nod knowingly.

Or, if you're feeling particularly annoying:

“Which one?”

Because once you start looking properly, you'll discover that Ireland's “seagulls” aren't one bird.

They're a whole cast of characters.

And yes, one of them may still steal your chips.

Why do we call them “seagulls”?

Because it makes sense.

They're often seen beside the sea, they fly over beaches, they hang around harbours and they have become one of the most recognisable sights of the Irish coast.

But here's the problem:

Not all gulls live beside the sea.

You can find gulls around lakes, rivers, wetlands, farmland, towns, cities, parks, rubbish tips and — increasingly — on rooftops.

Some species spend much of their lives inland.

Some migrate thousands of kilometres.

Some breed on remote islands and cliffs.

Others have discovered that human settlements offer something rather useful:

Food.

Lots and lots of food.

So perhaps “seagull” isn't just scientifically inaccurate.

It's also selling them a little short.

What is a gull?

Gulls are members of the bird family Laridae.

They are highly adaptable, intelligent and social birds, and their ability to exploit different environments has helped them become some of the most familiar birds in Ireland.

But don't let their familiarity fool you.

There is an enormous amount of variation between gull species.

Size.

Colour.

Bill shape.

Leg colour.

Wing pattern.

Behaviour.

Migration.

Breeding habitat.

And, perhaps most importantly, their conservation status.

That's why learning to identify individual species matters.

Because you can't protect what you don't notice.

The 5 Most Common Gulls in Ireland

You've probably been calling them all “seagulls”.

Here's what they actually are.

And we're starting with the bird most people probably imagine when they hear the word.

Photo by María López Jorge on Unsplash

01 — Herring Gull

Larus argentatus

The stereotypical Irish “seagull”

If you close your eyes and imagine a seagull, there's a very good chance you're picturing a Herring Gull.

Large body.

White head and underparts.

Pale grey back.

Black-tipped wings.

Big yellow bill.

Pinkish legs.

And an extraordinary ability to appear within approximately 14 seconds of someone opening a bag of chips.

Herring Gulls are among Ireland's most familiar large gulls and can be found around the coast as well as in urban areas.

And they've become remarkably comfortable around us.

Traditionally associated with rocky shores, islands and coastal habitats, Herring Gulls increasingly breed in towns and cities, including on rooftops.

Which means the relationship between humans and Herring Gulls has become… complicated.

We didn't just move into their neighbourhood.

They moved into ours.

How to identify a Herring Gull

Look for:

1. Large body
2. Pale grey back
3. White head and underparts
4. Black wing tips
5. White “mirrors” near the wing tips
6. Large yellow bill
7. Red spot on the bill
8. Pinkish legs

And that red spot?

It isn't just there for decoration.

It plays an important role in feeding behaviour between adults and chicks.

Nature is weird.

02 — Lesser Black-backed Gull

Larus fuscus

The dark-backed summer visitor

This one sounds like it should be wearing a leather jacket.

The Lesser Black-backed Gull is a large gull with a dark slate-grey back and upperwings, white underparts and yellow legs.

At first glance, it can look very similar to a Herring Gull.

But look at the legs.

Yellow?

You may have found yourself a Lesser Black-backed Gull.

The species is a summer visitor to Ireland, with many arriving in spring to breed before heading south again later in the year.

And this is where gulls become seriously impressive.

Many Lesser Black-backed Gulls migrate south after breeding, travelling as far as the Mediterranean and northwest Africa.

So that bird sitting casually on the harbour wall may have travelled considerably further than you did to get there.

How to identify a Lesser Black-backed Gull

Look for:

1. Large body
2. Dark slate-grey back
3. Dark upperwings
4. White head and body
5. Yellow legs
6. Yellow bill
7. Red spot on the bill

Herring Gull vs Lesser Black-backed Gull

Herring Gull: pale grey back + pinkish legs.

Lesser Black-backed Gull: dark grey back + yellow legs.

Once you know that, identification becomes considerably easier.

You're welcome.

Photo by Mark Raptapolus on Unsplash

03 — Great Black-backed Gull

Larus marinus

Ireland's heavyweight gull

Now we're talking.

The Great Black-backed Gull is the largest widespread gull found in Ireland.

And it looks like it knows it.

Big body.

Huge bill.

Broad wings.

Black back.

Pinkish legs.

And the general demeanour of a bird that has already read the terms and conditions and decided they don't apply.

Great Black-backed Gulls are predominantly coastal and can be found around rocky shores, islands and cliffs.

Their enormous size makes them one of the easier gulls to recognise once you know what you're looking for.

How to identify a Great Black-backed Gull

Look for:

1. Very large body
2. Very heavy bill
3. Black back and upperwings
4. White head and body
5. Pinkish legs
6. White wing mirrors

If you see a gull and your immediate reaction is:

“That's a seriously big gull.”

It might well be one.

04 — Common Gull

Larus canus

The gull with the misleading name

Here's where the naming department apparently decided to make things unnecessarily confusing.

The Common Gull is its own species.

It isn't simply a “common seagull”.

And it isn't necessarily the gull you see most often.

It's smaller and more delicate-looking than a Herring Gull, with a pale grey back, white body and yellowish legs and bill.

Common Gulls can be found around the Irish coast but also inland, including around lakes and other freshwater habitats.

And once you start looking carefully, you'll realise there are plenty of them hiding in plain sight.

Some even sound like they've just wandered out of a Dublin pub.

Listen closely and you could almost imagine one saying:

“What's the story, bud?”

While another, refusing to move from the harbour wall, appears to reply:

“I will in me hole.”

How to identify a Common Gull

Think:

Herring Gull — but smaller.

Look for:

1. Medium-sized body
2. Pale grey back
3. White body
4. Yellowish legs
5. Yellow bill
6. White wing mirrors

Size is one of the most useful clues when separating a Common Gull from a Herring Gull.

05 — Black-headed Gull

Larus ridibundus

The gull that doesn't actually have a black head

And now for one of the great acts of bird-based false advertising.

The Black-headed Gull doesn't actually have a black head.

Well…

It sort of does.

Sometimes.

During the breeding season, adults develop a dark chocolate-brown hood.

During winter, that disappears, leaving a dark spot behind the eye.

So:

Black-headed Gull.

Sometimes.

Brown-headed Gull.

Arguably.

Why did we name it this?

We have questions.

Black-headed Gulls are smaller than Herring and Common Gulls and are particularly widespread inland.

They can be found around:

• Lakes
• Ponds
• Wetlands
• Farmland
• Towns
• Cities
• Coastal areas

And despite their name, they are one of the easiest gulls to recognise once you know what you're looking for.

How to identify a Black-headed Gull

Look for:

1. Small-to-medium size
2. Pale grey back
3. White body
4. Red bill
5. Red legs
6. Dark brown hood in summer
7. Dark ear spot in winter
8. Distinctive white wing markings

We're beginning to suspect gulls enjoy confusing us.

And then things get interesting…

The five species above are among the gulls you're most likely to encounter in Ireland.

But they aren't the whole story.

Ireland also gets a number of less common and visiting species.

These can turn an ordinary walk along the coast into a surprisingly serious birdwatching session.

Mediterranean Gull

A striking gull with a dark hood, white body and distinctive wing pattern.

Iceland Gull

A scarce winter visitor that can appear in Ireland between autumn and spring.

One of its most distinctive features is its white wing tips.

No black tips.

That's a pretty useful clue.

Glaucous Gull

A large northern gull that occasionally turns up in Ireland.

Think:

Big. Pale. Impressive.

Little Gull

Yes.

There is a gull called the Little Gull.

And yes.

It is little.

It is also one of the smallest gull species in the world.

Kittiwake

And then there's the Kittiwake.

A member of the gull family, but not necessarily what you'd picture when someone says “seagull”.

Kittiwakes are strongly associated with marine environments and dramatic coastal cliffs.

And once you start recognising them, you'll realise that the Irish coastline is full of birds that most of us have been mentally filing under one category:

Seagull.

Your 30-Second Gull Identification Challenge

Next time you're beside the sea, don't just ask:

“What kind of seagull is that?”

Try this instead.

1. How big is it?

Tiny?

Medium?

Large?

Absolutely enormous?

Size can immediately narrow down the possibilities.

2. What colour is its back?

Light grey?

Dark slate?

Black?

3. What colour are its legs?

Pink?

Yellow?

Red?

This can be one of your best clues.

4. What does the bill look like?

Large?

Small?

Heavy?

Yellow?

Red?

Look for the red spot on some adult gulls.

5. Look at the wings

Those little white patches near the wing tips are called mirrors.

They're surprisingly useful for identification.

6. Is it an adult?

This is the big one.

Young gulls can look completely different from adults.

A juvenile may be brown and heavily patterned, while the adult of the same species can be almost entirely white and grey.

So if two gulls look completely different, they might not actually be different species.

One could simply be a teenager.

And, as anyone who has ever encountered a teenager will know, teenagers can look like an entirely different species.

Why should we care what they're called?

Because you can't protect what you don't notice.

And it's difficult to notice something properly if everything is simply:

“a seagull.”

Ireland's birds are part of a much bigger ecological story.

Some species are doing well.

Some are declining.

Some are threatened.

Others are declining, including some of Ireland's most iconic birds, such as the Curlew.

Some migrate thousands of kilometres between breeding and wintering grounds.

Some depend on healthy marine ecosystems.

Some depend on wetlands.

Some are adapting to our cities.

Others are struggling with habitat loss, pollution, climate change and changes in food availability.

The word “seagull” hides all of that complexity.

The name Herring Gull doesn't.

Neither does Black-headed Gull.

Or Kittiwake.

Or Little Tern.

Once you learn the name, you start to see the individual species rather than simply seeing “a bird at the beach”.

And that's when conservation becomes personal.

Are Ireland's gulls endangered?

This is where things get more complicated.

Not every gull species is endangered.

And “endangered” is not a catch-all term for every bird experiencing pressure.

Bird populations are assessed using different conservation categories, and their status can change as new evidence becomes available.

But gulls — like all wildlife — are affected by changes to their environment.

Food availability.

Habitat.

Pollution.

Climate change.

Human development.

Changes in marine ecosystems.

And the way we manage the places they depend upon.

That is why understanding our wildlife matters.

Because when you know what you're looking at, you start asking better questions.

How many are there?

Are their numbers increasing or declining?

Where do they breed?

Where do they go in winter?

What threats do they face?

And ultimately:

What can we do to help?

How many of Ireland's birds are actually at risk?

Here's the bigger question.

Ireland has an extraordinary diversity of birdlife.

But not all of it is secure.

And some of the birds we see every day can distract us from the species that are becoming increasingly difficult to find.

So we've created a free guide to help you discover some of the Irish birds that need our attention.

Discover 30 Irish bird species that face conservation challenges — where they live, what threatens them and why their survival matters.

The next time someone says “seagull”…

Don't correct them.

Not immediately.

We're not monsters.

Just point upwards and ask:

“Actually… which one?”

Because once you start looking properly, you'll discover that Ireland's “seagulls” aren't one bird.

They're a whole cast of characters.

The noisy one.

The enormous one.

The dark-backed traveller.

The rooftop resident.

The tiny one.

The winter visitor.

The bird with the supposedly black head.

The one that sounds like it's from Dublin.

And the one that's probably looking at your sandwich.

They're all different.

They're all fascinating.

And they're all part of the ocean story.

So next time you see a “seagull”… stop. Look. Identify.

There is no such thing as a seagull.

There are gulls.

And they're worth getting to know.

🌊 Track the Journey. Measure the Impact. Protect the Future.

For The Ocean

Explore our MEET THE SPECIES collection, discover Ireland's wildlife and learn more about the species and ecosystems that need our attention.

Learn. Notice. Care. Protect.