The Ocean’s Long-Distance Fliers
Shearwaters are the workhorses of the pelagic world. Where albatrosses draw the crowds and storm-petrels reward the patient, shearwaters are the birds you see on almost every trip, in almost every ocean, often in numbers that dwarf everything else combined. Roughly 30 species make up the family Procellariidae’s shearwater genera, and between them they cover more ocean than any other seabird group — some individual Sooty Shearwaters log over 65,000 kilometres in a single annual migration loop between the Southern Ocean and the North Pacific or North Atlantic.
Their flight is distinctive once you know it: long, stiff-winged glides low over the water, tilting from side to side to “shear” the wave troughs, interrupted by short bursts of flapping. It’s an energy-efficient technique for covering vast distances, and it’s usually the first clue that separates a distant shearwater from a gull or skua before any plumage detail is visible.
Here’s where to find shearwaters on pelagic birding trips around the world.
Large vs. Small: A Quick Primer
Shearwaters split roughly into two size classes, and knowing which group you’re looking at narrows identification fast.
Large shearwaters — Cory’s, Scopoli’s, Great, Sooty, and Pink-footed — are gull-sized or bigger, with slow, deep-chested gliding flight. Cory’s and Scopoli’s (increasingly treated as separate species) have pale, yellowish bills and a languid, arcing flight style. Great Shearwater shows a sharp dark cap, white collar, and dark belly patch. Sooty Shearwater is uniformly dark chocolate-brown all over, with silvery underwing flashes visible in good light.
Small shearwaters — Manx, Balearic, Black-vented, Audubon’s, and Galapagos — are crow-sized, with quicker, choppier wingbeats. Manx is crisply black-and-white, the classic “little shearwater” pattern. Balearic is a muddier brown-and-white version of the same shape, and often the hardest of the small shearwaters to call with confidence.
The North Atlantic Shearwater Highway
No stretch of ocean concentrates shearwater diversity quite like the waters between the British Isles and Iberia during the July–October passage season, when southern-hemisphere breeders migrating north cross paths with Mediterranean and Macaronesian species dispersing west.
In England, the Isles of Scilly Birder Special out of St Mary’s Harbour is one of the most productive shearwater trips anywhere in Europe, regularly recording Great, Cory’s, Sooty, Balearic, and Manx Shearwaters on a single outing from July through September. In Wales, the Celtic Deep Pelagic from Pembrokeshire has recorded Great Shearwater on every trip since 2021, alongside Manx Shearwater in flocks of hundreds — unsurprising given the Celtic Sea sits downstream of Skomer, home to the world’s largest Manx Shearwater colony at roughly 350,000 pairs. Further north, Birding Ecosse’s Ullapool–Stornoway crossing through the North Minch has logged over 140 Sooty Shearwaters in a single flock.
South along the same migration corridor, Portugal and Spain host the shearwater spectacle’s centrepiece: the Critically Endangered Balearic Shearwater. The Sagres Seabird Watching trip at Portugal’s southwestern tip and the Gulf of Cádiz Pelagic from Chipiona, Spain, both sit directly on this species’ post-breeding dispersal route out of the Mediterranean, each capable of producing hundreds to thousands of individuals in a single trip — a meaningful fraction of a global population of roughly 20,000 birds. Both trips also encounter Cory’s/Scopoli’s Shearwater in large numbers, plus Great and Sooty on passage.
Further north still, the BirdingHolland North Sea Seabird Trip funnels the same Atlantic migration through the southern North Sea, where Sooty Shearwater is the dominant species from August onward and Great Shearwater is a headline autumn find.
US East Coast: The Gulf Stream
The Hatteras Offshore Pelagic out of North Carolina’s Outer Banks reaches the Gulf Stream, where warm and cold water masses collide to create one of North America’s most productive shearwater grounds. Cory’s, Great, and Sooty Shearwaters are all regular from spring through autumn, often mixed together over the same current edge that draws the trip’s celebrated storm-petrel and jaeger diversity.
US West Coast: Millions of Sooty Shearwaters
The California Current upwelling makes the Pacific Northwest one of the best places on Earth to witness shearwater abundance rather than just diversity. Oregon Pelagic Tours out of Newport and Westport Seabirds in Washington both target the Heceta Bank and Olympic Peninsula shelf waters, where Sooty Shearwaters can appear by the millions during peak summer upwelling, joined by Pink-footed and Buller’s Shearwaters. Further south, the San Diego Offshore Pelagic targets warm-water incursions where Black-vented Shearwater — a range-restricted Baja California breeder — is a specialty.
Chile and British Columbia: The Pacific Rim Specialists
Pink-footed Shearwater breeds almost exclusively on Chile’s Juan Fernández and Mocha Islands, and the Far South Expeditions Humboldt Current Pelagic out of Valparaíso and Quintero is one of the most reliable places to see it near its breeding grounds. After breeding, the species disperses the length of the Pacific coast: Pink-footed Shearwater turns up again, thousands of kilometres north, on Vancouver Island trips like the Whale Centre Tofino Pelagic and Coastal Rainforest Safaris’ Quatsino Sound Pelagic, alongside Sooty, Buller’s, and Flesh-footed Shearwaters. The same British Columbia trips are also a strong option for Short-tailed Shearwater, which breeds in Bass Strait between Australia and Tasmania and undertakes a trans-equatorial migration into the North Pacific each boreal summer — one of the more improbable long-distance movements in the shearwater world.
Tropical Pacific: Hawaii, Japan, and Mexico
Warm-water shearwaters look and behave differently from their cold-current cousins, and three trips give access to distinct tropical assemblages. The Kona Pelagic Birding Adventure in Hawaii encounters Wedge-tailed Shearwater — the most abundant large shearwater in Hawaiian waters — as well as Christmas Shearwater and passage Sooty Shearwater, all against a backdrop of Hawaiian Petrel and Pterodroma diversity.
In Japan, the 25-hour Tokyo–Ogasawara Ferry Pelagic crosses more than 1,000 km of open Pacific and regularly produces Wedge-tailed and Bannerman’s Shearwaters alongside its famous North Pacific albatross trio.
On Mexico’s Pacific coast, the Tierra de Aves Huatulco Pacific Pelagic is built almost entirely around shearwaters. Galapagos Shearwater is the standout, encountered in tight flocks on nearly every trip thanks to the narrow continental shelf just a few miles offshore. Wedge-tailed, Pink-footed, and Black-vented Shearwaters are all regular, and the trip is the world’s most accessible location for the Critically Endangered Townsend’s Shearwater away from its remote Socorro Island breeding colony.
Australia: Southern Hemisphere Diversity
Australia’s east coast produces a strong shearwater mix of its own. The Sydney Pelagic out of Wollongong regularly turns up multiple shearwater species in the East Australian Current, while the Southport Seamounts Pelagic from the Gold Coast targets Flesh-footed and Wedge-tailed Shearwaters over the nearshore seamounts, with its multi-day Coral Sea expeditions reaching even further offshore.
ID Tips for Shearwaters at Sea
Watch the glide, not just the flap. Large shearwaters bank and tilt on stiff wings with long glides between wingbeats; small shearwaters flap more continuously with shorter glides. This is often visible long before plumage details resolve.
Check the underside pattern. A crisp black-and-white bird is a small shearwater (Manx-type); a muddy brown-and-white bird on the same wing shape is likely Balearic; uniform dark brown all over, with silvery underwing flashes, points to Sooty or Short-tailed.
Note the cap and belly. Great Shearwater’s sharp dark cap, white hindneck collar, and dark belly patch are diagnostic once learned. Cory’s and Scopoli’s lack the belly patch and show a pale bill.
Bill colour matters. Cory’s and Scopoli’s Shearwaters have distinctly pale, yellowish bills — one of the fastest ways to separate them from every other shearwater in this guide, all of which have dark bills.
Conservation Spotlight: Two Critically Endangered Shearwaters
Two of the shearwaters covered here carry the IUCN’s most urgent conservation status. Balearic Shearwater, breeding only in Spain’s Balearic Islands, has a global population of roughly 20,000 birds and is declining due to fisheries bycatch and predation at its breeding colonies — the Gulf of Cádiz, Sagres, Scilly, and Celtic Deep trips above all contribute observations that help track its Atlantic dispersal. Townsend’s Shearwater, restricted to a single breeding island in Mexico’s Revillagigedo Archipelago, numbers fewer than 10,000 birds; the Huatulco pelagic is one of the few dedicated birding trips anywhere that regularly reaches its dispersal range. Supporting operators that log sightings via eBird’s Pelagic Protocol — as several of the trips above do — feeds directly into the population monitoring these species depend on.
Ready to see shearwaters for yourself? Browse pelagic trips worldwide or explore by region to find a trip near your target species.