The sole attempt to clarify the general status of the Gulf of Guinea Storm Petrel was published more than 20 years ago and it failed to clarify the taxonomy or to confirm the existence of a breeding population ( Monteiro et al. However, fishermen on São Tomé and Príncipe are familiar with black-and-white storm petrels under the name ‘canimboto’ or ‘caniboto’, suggesting that it is a common bird around the islands. castro-hereafter Gulf of Guinea Storm Petrel), in the equatorial east Atlantic, are known from only a small number of museum specimens, and at-sea and over-land records. Band-rumped storm petrels in the Gulf of Guinea ( Hydrobates cf. Taxonomic relationships among these cryptic black-and-white taxa are poorly understood, although several species have been recognised in recent years (e.g. sensu lato) breed in the North Atlantic, South Atlantic and North Pacific Oceans ( Brooke 2004, Howell & Zufelt 2019 Fig. Taxa included in the band-rumped storm petrel complex ( Hydrobates castro. The three most pressing matters for future research are clarifying taxonomy, locating breeding colonies and identifying key threats. Our observations are provisional and further research is required. Morphology indicates a degree of distinctiveness and aerial vocalisations suggest possible taxonomic affinities with Cape Verde Storm Petrel H.
It almost certainly breeds on São Tomé during both the wet and long dry seasons, and breeding is probably protracted, possibly seasonal. The evidence indicates that this storm petrel is present in the Gulf of Guinea year-round.
The first photographs and sonograms pertaining to this population to be published are also presented.
Addressed are: occurrence in the Gulf of Guinea, including museum specimens, at-sea records, observations on the islands, and potential breeding sites seasonality, the timing of breeding inferred from condition of trapped birds and birds at sea in primary moult morphology, including biometrics, structure, plumage aspect aerial vocalisations at the suspected breeding grounds and taxonomy. castro to identify priority areas for research and conservation. We present what is known about the Gulf of Guinea band-rumped storm petrels Hydrobates cf.
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