Species Cyanoramphus cookii (G.R. Gray, 1859)

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CAVS: 8886

Species Cyanoramphus cookii (G.R. Gray, 1859)

Norfolk Island Parakeet, Tasman Parakeet

Platycercus cookii Gray, G.R. 1859. List of the Specimens of Birds in the Collection of the British Museum. London : British Museum 110 pp. Pt III Sect. II Psittacidae. [13] [as Cookii, and described as from New Zealand].
Type data:
Holotype BMNH ♂ adult (Old Vellum Cat. 22. 30a , ex W. Bullock Museum), Norfolk Is.(as New Zealand)
Comment: for identification of holotype and type locality, see Salvadori, T. 1891. Catalogue of the Birds in the British Museum. Catalogue of the Psittaci, or Parrots. London : British Museum Vol. 20 xvii 658 pp. XVIII pls (585); Warren, R.L.M. 1966. Type-specimens of Birds in the British Museum (Natural History). Vol. 1 Non-Passerines. London : British Museum ix 320 pp.
Platycercus rayneri Gray, G.R. 1862. A list of the birds of New Zealand and the adjacent islands. Ibis 4(15): 214-252 [228].
Type data:
Holotype BMNH 1859. 1.10.5 unsexed adult, Norfolk Is.
Comment: for identification of holotype, see Salvadori, T. 1891. Catalogue of the Birds in the British Museum. Catalogue of the Psittaci, or Parrots. London : British Museum Vol. 20 xvii 658 pp. XVIII pls (585); Warren, R.L.M. 1966. Type-specimens of Birds in the British Museum (Natural History). Vol. 1 Non-Passerines. London : British Museum ix 320 pp.
Cyanoramphus magnirostris Forbes, H.O. & Robinson, H.C. 1897. Catalogue of the parrots (Psittaci) in the Derby Museum. Bulletin of the Liverpool Museum 1: 5-22 [21] [as Cyanorhamphus magnirostris].
Type data:
Holotype LIVCM D.631a, Norfolk Is. (as Tahiti)
Comment: for identity, details and type locality of holotype, see Sims, R.W. 1953. On the status of Cyanoramphus magnirostris Forbes and Robinson, Bull. Liverpool Mus. 1, p. 21, 1897: Tahiti, Society Islands. Bulletin of the British Ornithologists' Club 73: 104-105; Wagstaffe, R. 1978. Type Specimens of Birds in the Merseyside County Museums. Liverpool : Merseyside County Museums, Merseyside County Council 33 pp.

Taxonomic Decision for Synonymy

Peters, J.L. 1937. Check-list of Birds of the World. Cambridge : Harvard University Press Vol. 3 xiii 311 pp. [270]

Introduction

Previously treated as a subspecies of C. novaezelandiae but raised to species by Boon et al. (2001). Although the genetic difference between C. cooki and C. novaezelandiae is significant, and equal to or greater than other interspecific differences in the genus, they are difficult to separate morphologically and treatment as a species not recognised by some authors, e.g. del Hoyo & Collar (2014). See Christidis & Boles (2008) for further discussion.

Distribution

Extra Distribution Information

Norfolk Island, Tasman Sea

Other Regions

Norfolk Island terrestrial & freshwater

Ecological Descriptors

Arboreal, closed forest, diurnal, florivore, frugivorous, granivore, gregarious, sedentary, volant.

Extra Ecological Information

Seasonal breeder, sexually dimorphic in size of bill, feeds arboreally on a variety of seeds, fruit and flowers, groups in pairs or small parties, flies directly with wing beats punctuated by gliding on down-swept wings, nests in high tree hollows, incubation by female, both sexes rear grey-white-downed, yellowish-billed chicks.