Accipiter efficax Balouet & Olson, 1989:6
Taxonomy & Nomenclature
Anderson et. al. (2010) hesitated at accepting the distinctiveness of this taxon based upon the fact that (Balouet & Olson, 1989) did not perform adequate comparisons with other taxa, only using a small sample size when establishing Accipiter efficax:
"Balouet & Olson (1989) described two Accipiter species (Accipiter quartus and A. efficax) on the basis of fossils that were slightly larger than the extant A. haplochrous and A. fasciatus, respectively. Given the intraspecific variability in extant raptor size and taking into account that only a few fasciatus (none from New Caledonia) and few haplochrous specimens were examined, then these determinations are suspect"
(Anderson et. al. 2010; 101)
Biology & Ecology
Holotype: NCP 1100
Type locality: "Pindai Cave, Nepoui Peninsula, west coast of New Caledonia; 21°20'S, 164°57'E."
Original scientific description:
Balouet, Jean Christophe and Olson, Storrs L. (1989). Fossil Birds from Late Quaternary Deposits in New Caledonia. Smithsonian Contributions to Zoology 469: 1-38, 16 figures, 13 tables.
Anderson, Atholl, Sand, Christophe, Petchey, Fiona and Worthy, Trevor H. (2010). Faunal Extinction and Human Habitation in New Caledonia: Initial Results and Implications of New Research at the Pindai Caves. Journal of Pacific Archaeology 1(1): 89-109.
Hume, Julian Pender and Walters, Michael. (2012). Extinct Birds. London: T & AD Poyser.