Portugal spans two of the Atlantic’s most productive pelagic birding theatres. On the mainland, the Algarve’s southwestern tip — where Cabo de São Vicente juts into open ocean at the convergence of Atlantic migration routes — hosts one of Europe’s most accessible shelf-edge pelagics. Nine hundred kilometres out in the mid-Atlantic, the Azores archipelago rises from one of the deepest sections of ocean on Earth, and a single shallow submarine bank off Graciosa Island concentrates a seabird diversity that rivals any single site in the northern hemisphere.
The two destinations share an Atlantic address but almost nothing else. The Algarve targets a largely migratory cast of shearwaters and storm-petrels funnelling past the continent’s edge in summer and autumn. The Azores targets one of the rarest and most restricted seabirds alive — an endemic that can only be reliably found in a square kilometre of open ocean above a bank most birders have never heard of. Together they make Portugal, in pelagic terms, far larger than its geography suggests.
All Portugal trips listed below are in our Portugal directory.
The Azores: Banco da Fortuna and the World’s Rarest Storm-Petrel
The Azores archipelago sits 1,500 kilometres west of Lisbon, at a point where the Mid-Atlantic Ridge pushes up from the ocean floor. Several islands are relatively young volcanoes, and their nearshore waters are among the deepest and most productive in the eastern Atlantic. Pelagic birding here is structured around one extraordinary target and one extraordinary site.
Azores Birders Pelagic
The Azores Birders Pelagic is operated by Azores Wildlife from Praia Harbour on Graciosa Island and is the pre-eminent dedicated seabird pelagic in the archipelago. Three afternoon departures are run during a five-day itinerary, each lasting from around 3 pm until dusk, travelling approximately 20 kilometres east of Graciosa to reach Banco da Fortuna — a shallow submarine bank rising from deep ocean that concentrates an extraordinary diversity of Atlantic seabirds.
The primary target is the Monteiro’s Storm-Petrel (Hydrobates monteiroi), a species so range-restricted it barely existed as a recognised taxon before 2008. The entire world breeding population of fewer than 300 pairs nests on just two tiny islets flanking Graciosa’s coastline. Pelagic trips to Banco da Fortuna, run in the heart of summer when Monteiro’s are provisioning chicks, routinely produce dozens of birds in a single afternoon — encounters with a significant fraction of the global population. There is, simply, nowhere else on Earth where this species can be reliably seen.
The timing in July and August is deliberately chosen to coincide with the overlap period of Monteiro’s (the hot-season form of Band-rumped Storm-Petrel) and Grant’s Band-rumped Storm-Petrel (the cool-season form), offering the possibility of seeing two cryptic sibling species in the same scope view — a combination achievable at no other site in the world.
Beyond Monteiro’s, Banco da Fortuna delivers an exceptional Atlantic seabird list. Cory’s Shearwater is abundant, often in flocks of hundreds riding the swell. Barolo Shearwater — the small, fast-flapping endemic shearwater of Macaronesian islands — occurs regularly, as does Bulwer’s Petrel and Wilson’s Storm-Petrel on southward migration. Near-annual surveys between 2011 and 2022 produced multiple records of Swinhoe’s Storm-Petrel (a trans-Atlantic vagrant), confirmed sightings of Zino’s Petrel, South Polar Skua, and Brown Booby, establishing Banco da Fortuna as one of the most productive vagrant seabird watchpoints in the eastern Atlantic.
The trip runs as a full package incorporating internal island flights and accommodation across three Azorean islands. An optional extension to see the critically endangered Azores Bullfinch on São Miguel rounds out the itinerary for birders who want a complete Azorean experience. Group sizes are limited, making advance booking essential.
Best time: July–August
The Algarve: Sagres and the Atlantic Migration Funnel
On mainland Portugal’s southernmost coast, the pelagic experience is entirely different in character. Sagres sits at the extreme southwest tip of continental Europe — the point at which the Iberian Atlantic coast turns east toward the Mediterranean, and at which north-south and east-west seabird migration routes converge onto a single stretch of ocean.
Sagres Seabird Watching
The Sagres Seabird Watching trip is operated by Mar Ilimitado from Baleeira Harbour in Sagres, venturing approximately 7–8 nautical miles south into open Atlantic aboard a rigid-hulled inflatable with an onboard biologist. Fish oil chum is deployed throughout the trip to draw storm-petrels and other tubenoses close. Trips run from June through October, with departures several times per week on demand.
The continental shelf off Sagres is unusually narrow: just 7–8 nautical miles from shore, the seabed drops rapidly toward deeper water, and the shelf break creates upwelling zones that concentrate shearwaters, storm-petrels, and skuas at the surface to feed. The result is one of the most accessible shelf-edge pelagics in western Europe — genuine open-Atlantic seabirding within a short RIB ride from harbour.
The most coveted species on any Sagres pelagic is the Balearic Shearwater (Puffinus mauretanicus), the most threatened seabird breeding in European waters. With a global population of approximately 15,000–20,000 individuals confined to nesting colonies in the Balearic Islands, the post-breeding dispersal through Portuguese waters represents a significant proportion of the entire species. Single trips in peak season routinely encounter dozens to hundreds of Balearic Shearwaters — this is one of the most important Atlantic staging grounds for a species teetering on the edge.
Cory’s Shearwater is the most abundant tubenose from summer through autumn, joined by Great Shearwater (a long-distance migrant from Tristan da Cunha) from July through September, and Sooty Shearwater in July and August. Manx Shearwater is a year-round fixture. Among storm-petrels, Wilson’s arrives in late May and is abundant through September, European Storm-Petrel is present spring through early autumn, and Leach’s Storm-Petrel passes offshore in autumn.
All four North Atlantic skua species are regular on autumn Sagres pelagics. Great Skua is most frequent from August onwards, sometimes approaching the vessel to investigate the chum. Pomarine and Arctic Skua are regular autumn migrants, and Long-tailed Skua — the most elegant of the four — is recorded on productive October trips at the peak of its Atlantic passage. Northern Gannet is a near-constant presence throughout. Audouin’s Gull appears as adults and immatures dispersing from Mediterranean breeding colonies, a noteworthy westerly vagrant at this extreme of its range.
Best time: June–October (peak shearwater passage: August–October)
Madeira: Zino’s Petrel, the Ghost Bird of the Atlantic
Madeira is the only place where one of the world’s rarest gadfly petrels can be seen at all. The entire breeding population of Zino’s Petrel (Pterodroma madeira), roughly 150–180 pairs, nests in burrows high in the island’s central massif, in a protected area closed to visitors. The only practical way to see the species is at sea.
The Zino’s Petrel Pelagics Expedition is run by Madeira Wind Birds from Machico Harbour aboard an 11-metre rigid-hulled inflatable. It runs across three consecutive afternoons of about seven hours each, in May, June and July, with chum deployed throughout. Day one works the waters west and north-west of the island for Zino’s Petrel and Madeiran Storm-Petrel. Day two moves toward the Desertas Islands, home of the Desertas (Fea’s) Petrel, with White-faced Storm-Petrel a regular target in the channel. Day three is held in reserve to revisit productive areas.
Bulwer’s Petrel and Cory’s Shearwater are routine, and Atlantic vagrants turn up often enough to keep every day interesting. The expedition costs €540 per person for all three days, and a date needs at least four confirmed bookings to go ahead, so check the operator’s current dates before you book flights.
Best time: May–July
Lisbon and Peniche: Mainland Pelagics Close to the Capital
Two mainland trips sit between the Algarve and the Azores in both geography and character.
SeaEO Tours Lisbon Atlantic Pelagic
SeaEO Tours runs a rigid-inflatable pelagic of up to four hours from Doca de Santo Amaro in central Lisbon, passing under the 25th of April Bridge and out through the Tagus estuary mouth into the Atlantic off Cascais. Trips run monthly from October to May and groups are capped at 12, with a marine biologist guiding and chum used to draw birds in. The season is the reverse of Sagres: winter brings Northern Gannets, Balearic and Manx Shearwaters, Razorbill, Common Guillemot and sometimes Atlantic Puffin, with skuas and jaegers passing in October and November. The listed price is €60 per person.
Vanellus Peniche and Berlengas
Vanellus departs Peniche port on the central coast and works the water between Cabo Carvoeiro and the Berlengas archipelago, four to ten nautical miles offshore. The Berlengas hold Portugal’s only mainland colonies of Cory’s Shearwater and Band-rumped Storm-Petrel, and the trip includes a break of about three hours on Berlenga Grande. Autumn passage past Cabo Carvoeiro is huge, with counts of tens of thousands of Cory’s and Balearic Shearwaters logged in a single autumn. Sailings are on selected dates in spring and autumn, so contact the operator for the schedule.
Best time: October–May for Lisbon; spring and autumn for Peniche
Flores and the Western Azores: October Pterodroma Pelagics
Banco da Fortuna is not the only Azores option. Almodovar Birding’s Azores Petrels Pelagic is led by the seabird author Hadoram Shirihai and departs from Flores Island, with an optional pickup at Corvo. It runs in October, with four flexible date options so the best conditions can be chosen on the day, and in August. Around six hours of continuous chumming targets Pterodroma petrels such as Black-capped, Trindade, Desertas/Fea’s and Zino’s Petrel. The price is listed at €200 per person per day, with a €100 deposit due within seven days of booking.
For a shorter option, Naturalist Science & Tourism offers a private half-day pelagic from Horta on Faial: about three hours by rigid-inflatable boat around the waters off Faial and Pico, with bait used to draw seabirds in.
Best time: October for Pterodroma petrels; July–August for Monteiro’s Storm-Petrel
Target Species Quick Reference
Azores (July–August): Monteiro’s Storm-Petrel ⬛ | Grant’s Band-rumped Storm-Petrel | Cory’s Shearwater | Barolo Shearwater | Bulwer’s Petrel | Wilson’s Storm-Petrel | Swinhoe’s Storm-Petrel (vagrant)
Madeira (May–July): Zino’s Petrel ⬛ (Critically Endangered) | Desertas/Fea’s Petrel | Madeiran Storm-Petrel | White-faced Storm-Petrel | Bulwer’s Petrel | Cory’s Shearwater
Lisbon (October–May): Balearic Shearwater | Manx Shearwater | Northern Gannet | Razorbill | Common Guillemot | Great Skua | Pomarine Skua
Peniche and Berlengas (spring and autumn): Cory’s Shearwater | Band-rumped Storm-Petrel | Balearic Shearwater | Northern Gannet | Great Skua
Western Azores (October): Black-capped Petrel | Trindade Petrel | Desertas/Fea’s Petrel | Zino’s Petrel
Algarve (June–October): Balearic Shearwater ⬛ (Critically Endangered) | Cory’s/Scopoli’s Shearwater | Great Shearwater | Sooty Shearwater | Wilson’s Storm-Petrel | European Storm-Petrel | Great Skua | Pomarine Skua | Arctic Skua | Long-tailed Skua | Northern Gannet | Audouin’s Gull
When to Go
July–August is the only window for the Azores Birders Pelagic, timed to the breeding season of Monteiro’s Storm-Petrel. This is a hard constraint — the trip simply does not run outside this window.
June–October covers the full Sagres season. Peak shearwater passage is August through October, when Balearic, Cory’s, and Great Shearwaters are most numerous and skua activity is highest. June and July offer excellent storm-petrel action with Wilson’s already abundant.
May–July is the Madeira window for Zino’s Petrel, so it overlaps the start of the Sagres season. October suits the western Azores Pterodroma trip, while winter birders can use the Lisbon trips from October to May.
For birders wanting to combine the Azores and the Algarve in a single Atlantic trip, the July–August overlap is the window to target: Azores first, then a few days in the Algarve for the autumn shearwater build-up.
Planning Your Trip
Getting there: Lisbon Airport is well connected throughout Europe and from North America. Faro Airport in the Algarve is a short distance from Sagres and is served by frequent direct flights from the UK, Netherlands, Germany, and other European markets. Azores flights from Lisbon to Terceira take under 2 hours; internal island flights to Graciosa are operated by SATA.
Book early: The Azores Birders Pelagic operates with strictly limited group sizes and typically fills months in advance. If Monteiro’s Storm-Petrel is a target species, book as early as possible.
Seasickness: The Atlantic swell off Sagres can be significant, particularly with southwesterly winds. For the Azores trips, the afternoon departures often encounter calmer evening conditions but ocean swells are unpredictable — medication taken the evening before is advisable for both destinations. Our guide to preventing seasickness compares the options.
Browse all Portugal pelagic trips in our Portugal directory.