Taxonomy is complex but Clements, SACC, IOC, HBW, and H&M all recognize this as a separate species from other skuas in the region. These can be identified by their pale body contrasting with darker wings and lack of evident pale streaking. In the past, the large skuas were placed in the genus Catharacta and HBW still uses that older classification.
Digiscoped with Panasonic DMC-LX5 | Nikon FieldScope III | 30XWA | hand-held (no adapter)