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

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.