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ʻIʻiwi

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702:, became rare to absent at lower elevations, even in relatively intact native forest. Avian malaria has been identified as the primary driver of declines in abundance and distribution of ʻiʻiwi observed since 1900. They are one of the most susceptible Hawaiian honeycreepers, with more than 75% exposure to the bird after being bitten by a single mosquito and with 90% overall mortality. One of the main reasons the 'I'iwi get exposed to malaria is because the birds move down to lower elevations post breeding season in order to track more food from ˋŌhiˋa trees and were shown to be exposed to malaria much more often than those birds who were more sedentary and stayed in higher elevation zones. In another study, they were also shown to have the longest movement patterns out of any of three other native Hawaiian birds, which may also be spreading avian malaria amongst the 'I'iwi. In middle elevations, there is a growing number of mosquitoes in the fall that facilitate disease transmission and affect the birds at higher elevations that travel to lower elevations to forage for food. ‘I’iwi usually reside at high enough elevations that they are not exposed to the disease. However, with climate change, they are expected to be exposed to the disease even more as the climate warms and the disease is able to develop in mosquitoes at higher altitudes where the ‘I’iwi used to be somewhat safe. As for the current abundance of 'I'iwi in these areas, there were more 'I'iwi found above 1350 m in altitude when compared to a survey done in 1979. There were also no 'I'iwi found in mid-elevations, while back in 1979, 37% of the 'I'iwi found were located here, which gives further evidence that they are being pushed into higher elevations because of global warming. For these reasons, it has been projected that the 'I'iwi may be on the verge of extinction by 2100. 594: 649: 44: 225: 404: 738:
and the most important tree in regards to ecology in Hawaii. However, in recent years many of the trees have begun to die out due to a disease called Ceratocystis Wilt, also called Rapid ˋŌhiˋa Death, which causes rapid death of the leaves on a single branch that spreads to the rest of the tree incredibly quickly. There has been extensive death of these trees in untouched part of the forest, which has further contributed to the problem of the 'I'iwi having to leave higher elevations to find food and being exposed to malaria.
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be extremely expensive. There have also been various other solutions proposed, like gene edited mosquitoes, feral pig control in order to reduce habitats for mosquito larvae, and 'I'iwi predator control in order to increase the population. Other solutions include getting rid of invasive species that produce nectar and increasing native flowering plants in higher elevations so that the 'I'iwi do not have to go into the lower elevation, mosquito infested areas to forage for food.
68: 351: 718:ʻIʻiwi habitat has been reduced and fragmented through various types of land development, including clearing native forest for food crops and grazing. Invasive plants also outcompete and displace native plants that ʻiʻiwi use for foraging and nesting. Invasive animals impact ʻiʻiwi in a variety of ways, for example feral ungulates may trample native plants and spread nonnative plants and invasive seeds, further degrading habitat. 412: 750:
Organizations throughout the islands have established nature reserves to protect native habitat. Fencing off sections of land to keep out feral ungulates, especially pigs, goats and axis deer enables native plants to recover from overgrazing and ungulate damage and helps restore native bird habitat.
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One way that has been studied to help mitigate the issue of 'I'iwi and avian malaria is through gene editing to make 'I'iwi that are resistant to malaria. However, a very large number of gene edited 'I'iwi would have to be released before the year 2050 in order for this strategy to work, which would
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Another problem aiding the extinction of the 'I'iwi is the death of the ˋŌhiˋa tree. The ˋŌhiˋa tree is known to act as shelter for various rare and endangered species and be a food source for many birds on the island, making it one of the most important sources of nectar for Hawaiian Honeycreepers
426:. The contrast of the red and black plumage with surrounding green foliage makes the ʻiʻiwi one of Hawaiʻi's most easily seen native birds. Younger birds have golden plumage with more spots and ivory bills and were mistaken for a different species by early naturalists. Observations of young birds 639:
Island, likely make daily trips from lower elevations to feed on nectar. Seeking food at low elevation exposes them to low elevation disease organisms and high mortality. It has been theorized that the ʻiʻiwi can migrate between islands and it may be why the bird has not gone extinct on smaller
628:. Overall, ninety percent of the ʻiʻiwi population is confined to a narrow band of forest on East Maui and the windward slopes of the island of Hawaii, between 4,265 and 6,234 feet (1,300 and 1,900 meters) in elevation. They are most abundant in mesic to wet forests at higher elevations. 1146:
Atkinson, C.T.; Woods, K.L.; Dusek, R.J.; Sileo, L.S. (January 1995). "Wildlife disease and conservation in Hawaii: Pathogenicity of avian malaria (Plasmodium relictum) in experimentally infected Iiwi (Vestiaria coccinea)".
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There is a movement to begin an official eradication of mosquitos in Hawaii, as there are no native species on the islands, and their removal would not hurt the food web. Each week, 250,000 male mosquitoes who
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Although 'I'iwi are still relatively common in Hawaii, they have lost over 90% of their range and are being considered to be listed on the endangered species act. ʻIʻiwi was formerly classified as a
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Fancy, S. G. and C. J. Ralph (2020). Iiwi (Drepanis coccinea), version 1.0. In Birds of the World (A. F. Poole and F. B. Gill, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
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Smith, Thomas B.; Freed, Leonard A.; Lepson, Jaan Kaimanu; Carothers, John H. (February 1995). "Evolutionary Consequences of Extinctions in Populations of a Hawaiian Honeycreeper".
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Similarly, the Iiwi was considered abundant throughout the island forest in the 1890s (Perkins 1903), still fairly common up to 1923, but extirpated by 1929 (Munro 1960).
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In recent years another threat has put native bird habitat at risk. Conservation groups are diligently working to reduce the risk of spreading a disease called
698:. ʻIʻiwi generally survive at higher elevations where temperatures are too cool for mosquitoes. Many disease-susceptible endemic birds, including ʻiʻiwi and 1229:
Knowlton, Jessie L.; Flaspohler, David J.; Paxton, Eben H.; Fukami, Tadashi; Giardina, Christian P.; Gruner, Daniel S.; Rankin, Erin E. Wilson (July 2017).
755:(ROD). This disease along with ʻōhiʻa dieback and ʻōhiʻa rust could lead to a rapid decline in ʻōhiʻa forests, an important nectar source for ʻiʻiwi. 565:
In the early winter in January to June, the birds pair off and mate as the ʻōhiʻa plants reach their flowering maximum. The female lays two to three
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by knocking over vegetation and hollowing out areas that fill with rain water. These have the potential to become incubator sites for mosquito
952:"Abundance, distribution and population trends of the iconic Hawaiian honeycreeper, Iiwi (Vestiaria coccinea) throughout the Hawaiian islands" 478: 1009: 593: 547:. Starting in 1902 the lobelioid population declined dramatically, and the ʻiʻiwi shifted to nectar from the blossoms of ʻōhiʻa lehua ( 1967: 682:ʻIʻiwi are listed as a threatened species because of small and declining populations in some of its range and its susceptibility to 1926: 1807: 1667: 671: 598: 1388: 1522:"Facilitated adaptation for conservation – Can gene editing save Hawaii's endangered birds from climate driven avian malaria?" 872: 1361: 1992: 419:
The adult ʻiʻiwi is mostly scarlet, with black wings and tail and a long, curved, salmon-colored bill used primarily for
1091:"Altitudinal migration and the future of an iconic H awaiian honeycreeper in response to climate change and management" 390: 1561:
Liao, Wei; Atkinson, Carter T.; LaPointe, Dennis A.; Samuel, Michael D. (6 January 2017). Sullivan, David J. (ed.).
1987: 1982: 899: 581:. These bluish eggs hatch in fourteen days. The chicks are yellowish-green marked with brownish-orange. The chicks 974: 1997: 1977: 1048: 890: 372: 520:, the sound of balls dropping in water, the rubbing of balloons together, and the squeaking of a rusty hinge. 1944: 707: 666:, but recent research has proven that it is rarer than previously believed. Consequently, it was uplisted to 1479:
Keith, L. M.; Hughes, R. F.; Sugiyama, L. S.; Heller, W. P.; Bushe, B. C.; Friday, J. B. (September 2015).
1414: 1129:"Endangered and Threatened Wildlife and Plants; Threatened Species Status for the Iiwi (Drepanis coccinea)" 368: 1766: 1761: 1726: 811: 752: 624:; very few ʻiʻiwi have been recorded on either island since the 1990s. They are no longer present on 323: 92: 1677: 1192:"Evening Roosting Flights of the Honeycreepers Himatione sanguinea and Vestiaria coccinea on Hawaii" 975:
Pacific Islands Fish and Wildlife Office, U.S. Fish and Wildlife Service, Region 1 (December 2016).
929: 1851: 1672: 976: 1521: 1024: 549: 361: 337:), a migratory bird. The long decurved bill of the curlew somewhat resembles that of the ʻiʻiwi. 1877: 710:
with local female mosquitoes are released from helicopters to suppress the mosquito population.
1748: 1688: 864: 858: 330: 1838: 437:, ʻiʻiwi were used in the feather trade. The ʻiʻiwi's feathers were highly prized by Hawaiian 1872: 1432:
Dyk, Kathryn N. van; Paxton, Kristina L.; Hart, Patrick J.; Paxton, Eben H. (12 April 2019).
632: 462: 303: 197: 508:. The Hawaiian song "Sweet Lei Mamo" includes the line "The ʻiʻiwi bird, too, is a friend". 1753: 1735: 1574: 984: 17: 1656: 1071:
Forest Bird Communities of the Hawaiian Islands: Their Dynamics, Ecology, and Conservation
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College of Tropical Agriculture and Human Resources at the University of Hawaii at Manoa
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Samuel, Michael D.; Liao, Wei; Atkinson, Carter T.; LaPointe, Dennis A. (January 2020).
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Guillaumet, Alban; Kuntz, Wendy A.; Samuel, Michael D.; Paxton, Eben H. (3 April 2017).
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Scott, J. Michael; Mountainspring, Stephen; Ramsey, Fred L.; Kepler, Cameron B. (1986).
907: 648: 1605: 1562: 1543: 1461: 1343: 1300: 1211: 1172: 911: 667: 237: 224: 87: 72: 1563:"Mitigating Future Avian Malaria Threats to Hawaiian Forest Birds from Climate Change" 403: 1972: 1610: 1592: 1547: 1502: 1465: 1453: 1347: 1335: 1292: 1284: 1265:"Introduced Avian Diseases, Climate Change, and the Future of Hawaiian Honeycreepers" 1203: 1164: 1110: 868: 505: 1304: 1176: 1890: 1600: 1582: 1533: 1492: 1445: 1434:"Seasonality and Prevalence of Pollen Collected from Hawaiian Nectarivorous Birds1" 1389:"Hawaii's birds are going extinct. Their last hope could be millions of mosquitoes" 1327: 1276: 1264: 1242: 1156: 1102: 903: 806: 640:
islands such as Molokaʻi. Altitudinal migration complicates population assessment.
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because of the close relationship between the ʻiʻiwi and the two species of mamo;
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with the greatest numbers in East Maui, and fewer than 1% of ʻiʻiwi remain on
1961: 1833: 1596: 1506: 1457: 1339: 1288: 1207: 1114: 797: 731: 687: 452: 214: 77: 1614: 1296: 578: 1362:"The 'I'iwi, a Besieged Hawaiian Forest Bird, Is Now Listed as Threatened" 1168: 832: 1864: 1846: 1820: 1720: 1481:"First Report of Ceratocystis Wilt on ˋŌhiˋa ( Metrosideros polymorpha )" 529: 420: 164: 1799: 1931: 1885: 1812: 1331: 1280: 1215: 1191: 915: 375: in this section. Unsourced material may be challenged and removed. 1825: 1320:"Current distribution and abundance of Kohala forest birds in Hawai'i" 1318:
Burnett, Keith; Camp, Richard J.; Hart, Patrick J. (7 December 2021).
1246: 845: 1674:'I'iwi Species Status Report by U.S. Fish & Wildlife Service 2016 1106: 719: 554: 544: 144: 104: 1682: 1628: 350: 1911: 1705: 1449: 1090: 695: 570: 566: 444: 439: 174: 124: 1939: 1789: 699: 683: 617: 517: 461:(feathered helmets), and such uses gave the species its original 457: 299: 1068: 727: 582: 536: 532: 498: 423: 307: 114: 1228: 782: 780: 276: 270: 264: 1784: 1049:"'I'iwi Receives Protection under the Endangered Species Act" 741: 625: 613: 574: 470: 427: 154: 670:
status in 2008. The species was listed as threatened by the
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The distribution of ʻIʻiwi (green) with extinct areas (red)
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List of adaptive radiated Hawaiian honeycreepers by form
1145: 411: 1073:. The Cooper Ornithological Society. pp. 157–163. 786: 1415:"How Invasive Feral Pigs Impact the Hawaiian Islands" 1263:
Atkinson, Carter T.; LaPointe, Dennis A. (May 2009).
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Hawaii's Comprehensive Wildlife Conservation Strategy
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U.S. Geological Survey, Open-File Report 2013-11150
516:The ʻiʻiwiʻs peculiar song consists of a couple of 267: 1190:MacMillen, Richard E.; Carpenter, F. Lynn (1980). 1189: 949: 812:10.2305/IUCN.UK.2020-3.RLTS.T22720844A179228794.en 950:Paxton, E.H.; Gorresen, P.M.; Camp, R.J. (2013). 1959: 1262: 306:. The ʻiʻiwi is a highly recognizable symbol of 1317: 977:Iiwi (Drepanis coccinea) Species Status Report 407:ʻIʻiwi in flight demonstrates its vivid colors 694:) is an introduced disease that is spread by 1387:Lauren Sommer; Ryan Kellman (12 June 2024). 989:: CS1 maint: multiple names: authors list ( 430:into adult plumage resolved this confusion. 318:Linguists derive the Hawaiian language word 856: 643: 588: 329:, which in central Polynesia refers to the 993:) CS1 maint: numeric names: authors list ( 742:Mitigating Threats and Conservation Issues 604:The largest populations of ʻiʻiwi inhabit 585:in 24 days and soon attain adult plumage. 528:The long bill of the ʻiʻiwi assists it to 223: 66: 42: 1604: 1586: 1537: 1496: 860:Ne Mele o Hawaiʻi Nei: 101 Hawaiian Songs 857:Elbert, Samuel H; Mahoe, Noelani (1970). 810: 501:, a reference to the shape of the beak.) 391:Learn how and when to remove this message 1064: 1062: 1042: 1040: 970: 968: 672:United States Department of the Interior 647: 592: 477:meaning "scarlet-colored". (In 2015 the 410: 402: 599:Hakalau Forest National Wildlife Refuge 14: 1960: 863:. University of Hawaii Press. p.  616:. There may be remnant populations on 1687: 1686: 1412: 1269:Journal of Avian Medicine and Surgery 1258: 1256: 1084: 1082: 1080: 1059: 1037: 1007: 965: 939:. State of Hawaiʻi. 14 December 2016. 826: 1945:8557FF55-2011-4C9F-AA04-4BDC4DFCE8BE 1001: 835:. Polynesian Lexicon Project Online. 373:adding citations to reliable sources 344: 908:10.1046/j.1523-1739.1995.09010107.x 846:https://doi.org/10.2173/bow.iiwi.01 798:IUCN Red List of Threatened Species 24: 1662:ʻIʻiwi videos, photos & sounds 1253: 1077: 714:Land Conservation and ˋŌhiˋa Death 25: 2009: 1650: 1046: 1968:IUCN Red List vulnerable species 1053:U.S. Fish & Wildlife Service 900:Society for Conservation Biology 677: 349: 260: 91: 1669:Extra information on the 'I'iwi 1664:on the Internet Bird Collection 1621: 1554: 1513: 1472: 1425: 1406: 1380: 1354: 1311: 1222: 1183: 1139: 1121: 1010:"Native Birds of Lanai, Hawaii" 787:BirdLife International (2020). 553:) trees. ʻIʻiwi also eat small 504:The bird is often mentioned in 360:needs additional citations for 943: 922: 881: 850: 838: 340: 13: 1: 1679:DNLR factsheet for the I'iwi. 770: 1588:10.1371/journal.pone.0168880 1539:10.1016/j.biocon.2019.108390 1324:Journal of Field Ornithology 481:moved the ʻiʻiwi from genus 313: 7: 1993:Taxa named by Georg Forster 1657:BirdLife Species Factsheet. 1498:10.1094/PDIS-12-14-1293-PDN 1413:Heber, Emily (4 May 2017). 1008:Hirai, Lawrence T. (1978). 758: 560: 10: 2014: 1901: 1695: 1161:10.1017/S003118200007582X 805:: e.T22720844A179228794. 243: 236: 231: 222: 203: 196: 88:Scientific classification 86: 64: 55: 50: 41: 36: 1235:Journal of Avian Biology 708:cannot produce offspring 644:Threats and Conservation 589:Habitat and Distribution 511: 447:) for use in decorating 324:Proto-Nuclear-Polynesian 1988:Birds described in 1780 1983:Endemic birds of Hawaii 1526:Biological Conservation 1023:: 71–77. Archived from 730:, which in turn spread 573:made from tree fibers, 550:Metrosideros polymorpha 523: 469:, which comes from the 1998:ESA threatened species 1978:Hawaiian honeycreepers 655: 601: 543:, which have decurved 416: 408: 331:bristle-thighed curlew 1873:Paleobiology Database 1095:Ecological Monographs 651: 596: 414: 406: 304:Hawaiian honeycreeper 1629:"RAPID ʻŌHIʻA DEATH" 1030:on 22 January 2015. 891:Conservation Biology 674:on 20 October 2017. 633:altitudinal migrants 608:Island, followed by 473:for "clothing", and 369:improve this article 335:Numenius tahitiensis 296:scarlet honeycreeper 1579:2017PLoSO..1268880L 1419:Island Conservation 1368:. 20 September 2017 692:Plasmodium relictum 686:and avian malaria. 541:Hawaiian lobelioids 479:IOC World Bird List 58:Conservation status 1332:10.1111/jofo.12386 1281:10.1647/2008-059.1 833:Protoform: KIWI.1* 753:Rapid ˋŌhiˋa Death 656: 602: 417: 409: 246:Vestiaria coccinea 1955: 1954: 1891:Drepanis-coccinea 1727:Drepanis coccinea 1697:Drepanis coccinea 1689:Taxon identifiers 1247:10.1111/jav.00924 874:978-0-87022-219-1 791:Drepanis coccinea 653:Drepanis coccinea 506:Hawaiian folklore 401: 400: 393: 291:Drepanis coccinea 252: 251: 207:Drepanis coccinea 81: 16:(Redirected from 2005: 1948: 1947: 1935: 1934: 1922: 1921: 1920: 1903:Certhia coccinea 1894: 1893: 1881: 1880: 1868: 1867: 1855: 1854: 1842: 1841: 1829: 1828: 1816: 1815: 1803: 1802: 1793: 1792: 1780: 1779: 1770: 1769: 1757: 1756: 1744: 1743: 1731: 1730: 1729: 1716: 1715: 1714: 1684: 1683: 1644: 1643: 1641: 1639: 1625: 1619: 1618: 1608: 1590: 1558: 1552: 1551: 1541: 1517: 1511: 1510: 1500: 1476: 1470: 1469: 1429: 1423: 1422: 1410: 1404: 1403: 1401: 1399: 1384: 1378: 1377: 1375: 1373: 1358: 1352: 1351: 1315: 1309: 1308: 1260: 1251: 1250: 1226: 1220: 1219: 1187: 1181: 1180: 1143: 1137: 1136: 1133:Federal Register 1125: 1119: 1118: 1107:10.1002/ecm.1253 1086: 1075: 1074: 1066: 1057: 1056: 1044: 1035: 1034: 1029: 1014: 1005: 999: 998: 988: 980: 972: 963: 962: 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Index

Iiwi

Conservation status
Vulnerable
IUCN 3.1
Scientific classification
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Eukaryota
Animalia
Chordata
Aves
Passeriformes
Fringillidae
Carduelinae
Drepanis
Binomial name
Forster

Synonyms
/ˈv/
species
Hawaiian honeycreeper
Hawaiʻi
Proto-Nuclear-Polynesian
bristle-thighed curlew

verification
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