Bill morphology reflects adaptation to a fibrous diet in the kākāpō (Strigops: Psittaciformes)

References

• Ballance A. 2010. Kakapo: rescued from the brink of extinction. Nelson: Craig Potton Publishing.
   Google Scholar
• Buller WL. 1887–1888. A history of the birds of New Zealand. 2nd ed. London: The author.
   Google Scholar
• Butler DJ. 2006. The habitat, food and feeding ecology of kakapo: in Fiordland: a synopsis from the unpublished MSc thesis of Richard Gray. Notornis. 53:55–79.
   Google Scholar
• Campbell B, Lack E, editors. 1985. A dictionary of birds. Calton, Staffordshire, UK: T. & A.D. Poyser.
   Google Scholar
• Chambers GK, Worthy TH. 2013. Our evolving view of the kakapo (Strigops habroptilus) and its allies. Notornis. 60:197–200.
   Google Scholar
• Demery ZP, Chappell J, Martin GR. 2011. Vision, touch and object manipulation in Senegal parrots Poicephalus senegalus. P Roy Soc B-Biol Sci. 278:3687–3693. doi: 10.1098/rspb.2011.0374
   PubMed Web of Science ®Google Scholar
• Eck S, Fiebig J, Fiedler W, Heynen I, Nicolai B, Töpfer T, van den Elzen R, Winkler R, Woog F. 2011. Measuring birds. Wilhelmshaven: Deutsche Ornithologen Gesellschaft.
   Google Scholar
• Gill BJ, Bell BD, Chambers GK, Medway DG, Palma RL, Scofield RP, Tennyson AJD, Worthy TH. 2010. Checklist of the birds of New Zealand, Norfolk and Macquarie Islands, and the Ross Dependency, Antarctica. 4th ed. Wellington: Te Papa Press.
   Google Scholar
• Henry R. 1903. The habits of the flightless birds of New Zealand; with notes on other New Zealand birds. Wellington: Government Printer.
   Google Scholar
• Higgins PJ, editor. 1999. Handbook of Australian, New Zealand and Antarctic birds. 4. Parrots to Dollarbird. Melbourne: Oxford University Press.
   Google Scholar
• Horrocks M, Salter J, Braggins J, Nichol S, Moorhouse R, Elliott G. 2008. Plant microfossil analysis of coprolites of the critically endangered kakapo (Strigops habroptilus) parrot from New Zealand. Rev Palaeobot Palynol. 149:229–245. doi: 10.1016/j.revpalbo.2007.12.009
   Web of Science ®Google Scholar
• Joseph L, Toon A, Schirtzinger EE, Wright TF, Schodde R. 2012. A revised nomenclature and classification for family-group taxa of parrots (Psittaciformes). Zootaxa. 3205:26–40.
   Web of Science ®Google Scholar
• Kirk EJ, Powlesland RG, Cork SC. 1993. Anatomy of the mandibles, tongue and alimentary tract of kakapo, with some comparative information from kea and kaka. Notornis. 40:55–63.
   Google Scholar
• Livezey BC. 1992. Morphological corollaries and ecological implications of flightlessness in the kakapo (Psittaciformes: Strigops habroptilus). J Morphol. 213:105–145. doi: 10.1002/jmor.1052130108
   PubMed Web of Science ®Google Scholar
• McCann C. 1963. External features of the tongues of New Zealand Psittaciformes. Notornis. 10:326–328, 341–345.
   Google Scholar
• Moorhouse RJ. 1997. The diet of the North Island kaka (Nestor meridionalis septentrionalis) on Kapiti Island. New Zeal J Ecol. 21:141–152.
   Web of Science ®Google Scholar
• O'Donnell CF, Dilks PJ. 1994. Foods and foraging of forest birds in temperate rainforest, South Westland, New Zealand. New Zeal J Ecol. 18:87–107.
   Web of Science ®Google Scholar
• Powlesland RG, Merton DV, Cockrem JF. 2006. A parrot apart: the natural history of the kakapo (Strigops habroptilus), and the context of its conservation management. Notornis. 53:3–26.
   Google Scholar
• Proctor NS, Lynch PJ. 1993. Manual of ornithology. Avian structure and function. New Haven: Yale University Press.
   Google Scholar
• Rheindt FE, Christidis L, Kuhn S, de Kloet S, Norman JA, Fidler A. 2014. The timing of diversification within the most divergent parrot clade. J Avian Biol. 45:140–148. doi: 10.1111/j.1600-048X.2013.00200.x
   Web of Science ®Google Scholar
• Wilson DJ, Grant AD, Parker N. 2006. Diet of kakapo in breeding and non-breeding years on Codfish Island (Whenua Hou) and Stewart Island. Notornis. 53:80–89.
   Google Scholar
• Worthy TH, Tennyson AJD, Scofield RP. 2011. An Early Miocene diversity of parrots (Aves, Strigopidae, Nestorinae) from New Zealand. J Vertebr Paleontol. 31:1102–1116. doi: 10.1080/02724634.2011.595857
   Web of Science ®Google Scholar
• Wright TF, Schirtzinger EE, Matsumoto T, Eberhard JR, Graves GR, Sanchez JJ, Capelli S, Mueller H, Scharpegge J, Chambers GK, Fleischer RC. 2008. A multilocus molecular phylogeny of the parrots (Psittaciformes): support for a Gondwanan origin during the Cretaceous. Mol Biol Evol. 25:2141–2156. doi: 10.1093/molbev/msn160
   PubMed Web of Science ®Google Scholar