The waters around Sagres are also a migratory stage, where thousands of seabirds cruise in and out of their breeding grounds, on their way to or from their wintering grounds. Seawatching at Cape St. Vincent can be a remarkable experience, especially in inshore winds.
The most abundant bird is definitively the Northern Gannet Morus bassanus. From mid-October onwards, some hundreds or even a few thousand birds per your can cruise by the Cape, in a spectacular display of the natural forces at play. Also very abundant are Cory’s Shearwater Calonectris borealis, Balearic Shearwater Puffinus mauretanicus, Lesser Black-backed Gull Larus fuscus and Great Skua Catharacta skua. Scarcer birds like Sooty shearwater Puffinus griseus, Audouin’s Gull Larus audouinnii or Pomarine Jaeger Stercorarius pomarinus are regularly spotted from land in due time. Great Shearwater Puffinus gravis and Wilson’s Storm-Petrel Oceanites oceanicus are also quite abundant (especially during August and September), but require a pelagic trip. Rarities like Sabine’s Gull Xema sabini and Long-tailed Skua Stercorarius longicaudus have been spotted.