Presumed Fuegian Storm Petrels Oceanites oceanicus chilensis off São Tomé, Gulf of Guinea, and in the North and South Atlantic Oceans

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This note summarises key identification criteria for Fuegian Storm Petrel Oceanites oceanicus chilensis that permit field separation from Wilson’s Storm Petrel O. o. oceanicus/exasperatus. Multiple sightings of presumed Fuegian Storm Petrel off São Tomé are considered in the light of these identification criteria. Here, we establish a provisional range for presumed Fuegian Storm Petrels in the Atlantic based on relevant literature, photographs in the Macaulay Library, and responses to social media requests.