|ʻIʻiwi (Drepanis coccinea)|
Hawaiian honeycreepers are small, passerine birds endemic to Hawaiʻi. They are closely related to the rosefinches in the genus Carpodacus. Their great morphological diversity is the result of adaptive radiation in an insular environment.
Before the introduction of molecular phylogenetic techniques, the relationship of the Hawaiian honeycreepers to other bird species was controversial. The honeycreepers were sometimes categorized as a family Drepanididae, other authorities considered them a subfamily, Drepanidinae, of Fringillidae, the finch family. The entire group was also called "Drepanidini" in treatments where buntings and American sparrows (Emberizidae) are included in the finch family; this term is preferred for just one subgroup of the birds today. Most recently, the entire group has been subsumed into the finch subfamily Carduelinae.
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The group is divided into three tribes, but only very provisionally so. Several taxa appear to be too basal to really place into one of these, and others are best considered incertae sedis. Some unusual forms never seen alive by scientists, such as Xestospiza or Vangulifer, cannot easily be placed into any tribe.
Members of Psittirostrini, known as "Hawaiian finches", are granivorous with thick finch-like bills, and songs like those of cardueline finches. The group once covered the islands. Finch-billed drepanids include the Laysan finch, the Nihoa finch, the Maui parrotbill and the palila, which may be the last remaining species left alive in this group. Extinct species include the four koa finches, the ʻōʻū, and the Lānaʻi hookbill.
Hemignathini includes the Hawaiʻi creeper and its allies, such as the nukupuʻu. These are generally green-plumaged birds with thin bills, and feed on nectar and insects. Members of this group usually have green, yellow, orange, red, and gray feathers.
Species in the tribe Drepanidini are nectarivorous, and their songs contain nasal squeaks and whistles. Members of this group often have red black, yellow, white and orange plumage. It includes the ʻiʻiwi.
The male Hawaiian honeycreepers are more brightly colored than the females in the Psittirostrini, but in the Hemignathini, they often look very similar. The flowers of the native ʻōhiʻa lehua (Metrosideros polymorpha) are favored by a number of nectarivorous honeycreepers. Many species of this subfamily have been noted to have a plumage odor that has been termed the "Drepanidine odor", and is suspected to have a role in making the bird distasteful to predators.
The wide range of bills in this group, from thick, finch-like bills to slender, downcurved bills for probing flowers have arisen through adaptive radiation, where an ancestral finch has evolved to fill a large number of ecological niches. Some 20 species of Hawaiian honeycreeper have become extinct in the recent past, and many more in earlier times, between the arrival of the Polynesians who introduced the first rats, chickens, pigs, and dogs, and hunted and converted habitat for agriculture.
Genera and species
The term "prehistoric" indicates species that went extinct between the initial human settlement of Hawaiʻi (i.e., from the late 1st millennium AD on) and European contact in 1778.
- Tribe Drepanidini
- Genus Ciridops Newton, 1892 – finch-like, fed on fruit of Pritchardia species
- Genus Drepanis Temminck, 1820 – downcurved bills, nectarivores
- Genus Himatione – thin-billed nectarivore
- Genus Melamprosops Casey & Jacobi, 1974 – short pointed bill, browser and snail specialist
- Genus Palmeria Rothschild, 1893 – thin-billed nectarivore, favors Metrosideros polymorpha
- Tribe Hemignathini
- Genus Aidemedia Olson & James, 1991 – straight thin bills, insectivores
- Genus Chlorodrepanis Olson & James, 1995 – pointed bills, insectivorous or nectarivorous
- Genus Viridonia
- Genus Hemignathus Lichtenstein, 1839 – pointed or long and downcurved bills, insectivorous or nectarivorous
- (Sub)Genus Heterorhynchus
- Genus Magumma
- Genus Akialoa Olson & James, 1995 – pointed, long and downcurved bills, insectivorous or nectarivorous
- Akialoa ellisiana Gray, 1859 – Oʻahu ʻakialoa (extinct, 1940)
- Akialoa lanaiensis Rothschild, 1893 – Maui Nui ʻakialoa (extinct, 1892)
- Akialoa stejnegeri Wilson, 1889 – Kauaʻi ʻakialoa (extinct, 1969)
- Akialoa obscura Cabanis, 1889 – lesser ʻakialoa (extinct, 1940)
- Akialoa upupirostris – hoopoe-billed ʻakialoa (prehistoric)
- Genus Loxops – small pointed bills with the tips offset a little horizontally, insectivores
- Genus Oreomystis Wilson, 1891 – short pointed bills, browsers
- Genus Paroreomyza – similar to Oreomystis
- Pareromyza montana
- Paroreomyza montana montana Wilson, 1890 – Lānaʻi ʻalauahio (extinct, 1937)
- Paroreomyza montana newtoni (Rothschild, 1893) – Maui Nui ʻalauahio
- Paroreomyza flammea (Wilson, 1889) – Molokaʻi creeper or kākāwahie (extinct, 1963)
- Paroreomyza maculata Cabanis, 1850 – Oʻahu ʻalauahio (possibly extinct, early 1990s?)
- Pareromyza montana
- Genus Vangulifer – flat rounded bills, possibly caught flying insects
- Tribe Psittirostrini
- Genus Chloridops Wilson, 1888 – thick-billed, Myoporum sandwicense and other hard seed specialist
- Genus Dysmorodrepanis Perkins, 1919 – pincer-like bill, possibly snail specialist
- Genus Loxioides Oustalet, 1877 – finch-like, Fabales seed specialists
- Genus Orthiospiza – large weak bill, possibly soft seed or fruit specialist?
- Genus Pseudonestor – parrot-like bill, probes decomposing wood for insect larvae
- Genus Psittirostra – slightly hooked bill, Freycinetia arborea fruit specialist
- Genus Rhodacanthis – large-billed legume specialists
- Rhodacanthis flaviceps Rothschild, 1892 – lesser koa-finch (extinct, 1891)
- Rhodacanthis forfex James & Olson, 2005 – scissor-billed koa-finch (prehistoric)
- Rhodacanthis litotes James & Olson, 2005 – primitive koa-finch (prehistoric)
- Rhodacanthis palmeri Rothschild, 1892 – greater koa-finch (extinct, 1896)
- Genus Telespiza Wilson, 1890 – finch-like, granivores, opportunistic scavengers
- Genus Xestospiza James & Oslon, 1991 – cone-shaped bills, possibly insectivores
|Wikimedia Commons has media related to Drepanidinae.|
- Lerner, H.R.L.; Meyer, M.; James, H.F.; Fleischer, R.C. (2011). "Multilocus resolution of phylogeny and timescale in the extant adaptive radiation of Hawaiian Honeycreepers". Current Biology 21: 1838–1844. doi:10.1016/j.cub.2011.09.039.
- Zuccon, Dario; Prŷs-Jones, Robert; Rasmussen, Pamela C.; Ericson, Per G.P. (2012). "The phylogenetic relationships and generic limits of finches (Fringillidae)" (PDF). Molecular Phylogenetics and Evolution 62 (2): 581–596. doi:10.1016/j.ympev.2011.10.002.
- Clements, J. 2007. The Clements Checklist of the Birds of the World. 6th ed. ISBN 978-0-7136-8695-1
- Dickinson, E, ed. (2003). The Howard and Moore Complete Checklist of the Birds of the World (3rd ed.). Princeton University Press. ISBN 978-0-691-11701-0.
- AOU Check-list of North American Birds Accessed 26 December 2007
- Gill, Frank; Donsker, David (eds.). "Finches, euphonias". World Bird List Version 5.2. International Ornithologists' Union. Retrieved 5 June 2015.
- Pratt, H Douglas (2002). The Hawaiian Honeycreepers. Oxford University Press. p. 46. ISBN 978-0-19-854653-5.
- Weldon, Paul J; John H. Rappole (1997). "A Survey of Birds Odorous or Unpalatable to Humans: Possible Indications of Chemical Defense". Journal of Chemical Ecology (Springer Science+Business Media) 23 (11): 2609–2633. doi:10.1023/B:JOEC.0000006670.79075.92.
- Olson, Storrs L.; James, Helen F (1991). "Descriptions of Thirty-Two New Species of Birds from the Hawaiian Islands: Part I. Non-Passeriformes". Ornithological Monographs 45 (45): 1–91. doi:10.2307/40166794. hdl:10088/1745.
- James, Helen F.; Olson, Storrs L (1991). "Descriptions of Thirty-Two New Species of Birds from the Hawaiian Islands: Part II. Passeriformes". Ornithological Monographs 46 (46): 1–92. doi:10.2307/40166713. hdl:10088/1746.
- James, Helen F; Storrs L. Olson (2003). "A giant new species of nukupuu (Fringillidae: Drepanidini: Hemignathus) from the island of Hawaii". The Auk 120 (4): 970–981. doi:10.1642/0004-8038(2003)120[0970:AGNSON]2.0.CO;2.
- James, Helen F.; Johnathan P. Prince (May 2008). "Integration of palaeontological, historical, and geographical data on the extinction of koa-finches". Diversity & Distributions 14 (3): 441–451. doi:10.1111/j.1472-4642.2007.00442.x.
- Groth, J. G. 1998. Molecular phylogeny of the cardueline finches and Hawaiian honeycreepers. Ostrich, 69: 401.