Fregetta lineata (Peale, 1848) is a valid extant species endemic to New Caledonia
2022
Bretagnolle, Vincent | Flood, Robert L. | Gaba, Sabrina | Shirihai, Hadoram
We present evidence that confirms the streaked Fregetta lineata is a valid extant species that breeds on New Caledonia and endorse the vernacular name New Caledonian Storm Petrel. We review taxonomic deliberations over the historic five ‘Pealea’ streaked storm petrel specimens. Three belong to the recently rediscovered New Zealand Storm Petrel F. maoriana. We study six biometrics of the other two identical-looking specimens, one from Samoa, the other from the Marquesas Islands, a third ‘new’ specimen collected off Brisbane, and other Fregetta taxa. Results of Principal Component Analyses, Discriminant Analyses, and a review of phylogenetic relationships between Fregetta storm petrels, F. lineata and F. maoriana, lead us to conclude that the three specimens represent a single taxon, F. lineata. Furthermore, F. lineata is clearly separated from F. maoriana, White-bellied Storm Petrel F. grallaria and Black-bellied Storm Petrel F. tropica. We further conclude that storm petrels photographed at sea, off New Caledonia and in the Coral Sea, are F. lineata. We then redescribe F. lineata from at-sea observations, photographs taken at sea, and study of the three museum specimens. Criteria for in-hand and at-sea identification are presented. We report the first breeding record, from New Caledonia, a grounded fledgling presumably disoriented by onshore artificial lights. We explore likely breeding locations and conservation issues.
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