Lava Gull: The Rarest Gull on Earth, Only 600 Left

The lava gull is widely considered the rarest gull in the world, with only around 600 birds left — and every one of them lives in the Galapagos. Sooty grey and elegant, it nests alone rather than in colonies, yet you can often see it right from the dock. Here is what it is and where to spot it.

At a glance

• Scientific name: Leucophaeus fuliginosus
• Population: only around 300-400 pairs (~600 birds) — the rarest gull on Earth
• Plumage: sooty dark grey with a red mouth lining and red-and-white eye-ring
• Nesting: solitary, not in colonies — unusual for a gull
• Diet: an opportunist — fish, crabs, eggs, hatchlings and scraps
• Where: endemic to the Galapagos; easy to see on the inhabited islands

What is the Galapagos lava gull?

The lava gull (Leucophaeus fuliginosus) is a medium-sized gull endemic to the Galapagos. Adults are a smoky, “lava-coloured” dark grey, with a black head, a striking red lining inside the mouth and a red-and-white eye-ring; juveniles are browner. Its sooty tones set it apart from any other gull you will see here. The galapagos lava gull is the only gull species endemic to the archipelago. Planning a trip around what you want to see? Tell us your dates and we’ll send a free quote within 24 hours.

The rarest gull in the world

With only around 300 to 400 breeding pairs — roughly 600 birds in total — the lava gull is widely regarded as the rarest gull on the planet. Remarkably, despite that rarity, it is one of the easiest Galapagos endemics to see, because it lives right alongside people on the inhabited islands.

A gull that nests alone

Most gulls breed in noisy colonies. The lava gull does the opposite: pairs nest solitarily, spacing themselves widely along quiet beaches and lagoons and defending a private patch. That unusual habit is one reason the population stays so small and so spread out.

What it eats

It is a classic opportunist and scavenger. It takes fish and small crabs, raids the eggs and hatchlings of other birds, and happily cleans up scraps around harbours and fish docks. That flexible diet is exactly what lets such a rare bird thrive around the islands’ towns.

Where to see it

Rare, yet surprisingly easy — head for the waterfronts:

• Puerto Ayora (Santa Cruz) — around the fish market and harbour.
• Puerto Baquerizo Moreno (San Cristobal) — the town waterfront.
• Quiet beaches and lagoons — where solitary pairs nest.

Quick facts

A few more lava gull facts:

• Its scientific name is Leucophaeus fuliginosus, endemic to the Galapagos.
• It is widely considered the rarest gull in the world.
• Only around 600 birds remain.
• It nests solitarily, not in colonies.
• It is an opportunist scavenger, easy to see around harbours.

Breeding and conservation of the lava gull

The gull’s solitary nesting is the key to its rarity. A pair scrapes a simple nest on bare ground near a quiet beach or lagoon, defends a wide territory, and usually raises just two well-camouflaged chicks. Because the birds spread themselves so thinly rather than gathering in colonies, the global population has never been large — an estimated 300 to 400 pairs — and it is naturally vulnerable to disturbance, introduced predators and changes along the shoreline. You can see this on our Isabela Island tour.

Despite that fragility, this is one of the easiest Galapagos endemics to enjoy, because it has learned to live alongside people. You will often spot it scavenging around fish-cleaning tables, harbours and tour-boat moorings, where it cleans up scraps with calm confidence. Keeping a respectful distance, not feeding it, and supporting the National Park’s biosecurity work are the simplest ways visitors can help protect the rarest gull on Earth for the future.

Leucophaeus fuliginosus: a gull built for lava shores

The scientific name leucophaeus fuliginosus — roughly “the sooty, dusky one” — captures the gull perfectly. It sits in the same genus as the laughing and Franklin’s gulls of the Americas, but evolution on the islands has stripped away the usual grey-and-white gull pattern in favour of an all-over smoky charcoal. That dark plumage blends against the black volcanic rock and lava sand where the bird spends its life, giving it a measure of camouflage unusual for a gull.

Up close, leucophaeus fuliginosus is genuinely handsome: a near-black hood, a deep-red lining inside the mouth that flashes when it calls, and a bold red-and-white ring around the eye. Juveniles are browner and more mottled, gradually darkening as they mature. It is a medium-sized, long-winged gull, agile in the air but most often seen standing watchfully on a rock or strolling a tide line.

Why the lava gull is the rarest gull in the world

Several gulls are scarce, but the gull is widely judged the rarest gull in the world because of how few there are and how tightly it is confined. With only an estimated 300 to 400 breeding pairs — perhaps 600 birds — all living within a single archipelago, it has one of the smallest ranges and populations of any gull on the planet. There is no second stronghold elsewhere; if the Galapagos population fails, the species is gone.

Its solitary nesting compounds the rarity. Rather than massing in protective colonies like most gulls, pairs spread themselves thinly along quiet beaches and lagoons, which naturally limits how many can pack into the islands. The trade-off is that each pair defends a private patch and the birds never form the dense, noisy gatherings that make other gulls seem so numerous.

Lava gull facts and how to tell it apart

A few lava gull facts make identification easy once you know them: it is the only entirely dark, sooty gull in the Galapagos, it has that startling red mouth-lining, and it is almost always found near water on the inhabited islands. Confusion is unlikely, because the swallow-tailed gull — the other common Galapagos gull — is pale grey with a forked tail and a very different look.

As an opportunist, it follows people and predators alike, scavenging fish scraps at harbours, snatching eggs and hatchlings from other seabirds, and patrolling beaches for anything edible the tide leaves behind. That adaptability is precisely what lets such a rare bird live comfortably alongside the towns — and why a coffee on the Puerto Ayora waterfront is one of the most reliable places on Earth to watch the rarest gull there is.

Best time and places to watch it

Because it lives alongside people, you do not need a special expedition to find this smoky-grey seabird — you need a harbour and a little patience. It is present year-round, so there is no wrong season, though early morning and late afternoon, when the fishing boats come in and clean their catch, are the most reliable times. The birds gather where the scraps are, standing watchfully on the dock or floating just off the pier.

A few spots stand out for a close, calm encounter:

• Puerto Ayora fish market (Santa Cruz) — perhaps the single best place, where the birds wait beside pelicans and sea lions for offcuts.
• Puerto Baquerizo Moreno (San Cristobal) — the town waterfront and harbour wall.
• Quiet beaches and lagoons — where solitary pairs nest away from the crowds.
• Tour-boat moorings at dawn — the birds often shadow vessels in the hope of an easy meal.

For photographers, the dark plumage and the bright red mouth-lining make a striking subject, but they are also a challenge: the sooty tones fool many cameras, so a touch of exposure compensation helps keep the bird from turning into a silhouette. A low angle from the dockside, with the water behind, tends to give the cleanest results.

More than a tick on a list, watching this bird is a small lesson in how fragile abundance can be. Here is a species you can see from a café chair, yet one of the scarcest of its kind anywhere on Earth — a reminder that rarity is not always remote or dramatic. Supporting the Galapagos National Park’s biosecurity work, keeping a respectful distance and never feeding the birds are the simplest ways every visitor can help keep that quiet marvel a part of the islands’ future.

There is a wider lesson in this small, dark endemic too. Confined to a single archipelago and never numerous, it shows how a species can be perfectly at home yet hang by a thread, its whole future bound to the health of these few islands and the waters around them.

The Galapagos Marine Reserve, one of the largest protected seascapes on Earth, is what gives it — and the fish, crabs and nesting seabirds it depends on — a fighting chance. Every visitor who travels responsibly, follows the National Park rules and supports local conservation is, in a quiet way, helping to keep that fragile balance intact for the generations of travellers still to come.

Like the islands’ other seabirds, the species is thought to have arrived long ago from the coast of the Americas, then evolved in isolation into the dark, endemic form seen today — a common question among visitors is exactly how it reached such remote islands in the first place. Ecologically it is a classic generalist: rather than depending on one prey or one habitat, it eats almost anything and lives wherever the coast provides.

It is also strongly k-selected in the language of biologists — long-lived, slow to mature and raising very few young at a time, the opposite of a fast-breeding species. That cautious life history helps explain both its naturally small numbers and why every breeding pair matters so much to the population’s future.

Frequently asked questions

Meeting the rarest gull on Earth

The gull is a quiet marvel: the rarest gull in the world, yet one you can watch from a harbour wall with a coffee in hand. Smoky grey and self-possessed, it is a Galapagos endemic that rewards a second look.

Read more at the Galapagos Conservation Trust, or meet its night-hunting cousin the swallow-tailed gull and the rest of the cast in Galapagos islands animals.