Iiwi
Drepanis coccinea
A bright red Hawaiian honeycreeper of high elevation native forests on Kauai, Maui, and Hawaii Island. Very rare on Oahu and Molokai. The brilliant crimson color and long, curved salmon-colored bill are diagnostic. Juveniles are mottled green, yellow, and orange. Very active and boisterous in the understory and forest canopy. Aggressively chases other birds from flowering trees. Vocalizations include a complex array of gurgles, chuckles, and reedy notes, more varied, lower pitched, and louder than those of the Apapane.
Identification
The adult ʻiʻiwi is mostly scarlet, with black wings and tail and a long, curved, salmon-colored bill used primarily for drinking nectar. 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 moulting into adult plumage resolved this confusion.<p>Along with the Hawaiʻi Mamo, ʻiʻiwi were used in the feather trade. The ʻiʻiwi's feathers were highly prized by Hawaiian aliʻi (nobility) for use in decorating ʻahuʻula (feather cloaks) and mahiole (feathered helmets), and such uses gave the species its original scientific name: Vestiaria, which comes from the Latin for "clothing", and coccinea meaning "scarlet-colored". (In 2015 the IOC World Bird List moved the ʻiʻiwi from genus Vestiaria to Drepanis because of the close relationship between the ʻiʻiwi and the two species of mamo; Drepanis comes from the Greek for sickle, a reference to the shape of the beak.)<p>The bird is often mentioned in Hawaiian folklore. The Hawaiian song "Sweet Lei Mamo" includes the line "The ʻiʻiwi bird, too, is a friend".<p>The ʻiʻiwiʻs peculiar song consists of a couple of whistles, the sound of balls dropping in water, the rubbing of balloons together, and the squeaking of a rusty hinge.<p>The long bill of the ʻiʻiwi assists it to extract nectar from the flowers of the Hawaiian lobelioids, which have decurved corollas. Starting in 1902 the lobelioid population declined dramatically, and the ʻiʻiwi shifted to nectar from the blossoms of ʻōhiʻa lehua (Metrosideros polymorpha) trees. ʻIʻiwi also eat small arthropods.<p>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 eggs in a small cup shaped nest made from tree fibers, petals, and down feathers. These bluish eggs hatch in fourteen days. The chicks are yellowish-green marked with brownish-orange. The chicks fledge in 24 days and soon attain adult plumage.<p>The largest populations of ʻiʻiwi inhabit Hawaiʻi Island, followed by Maui with the greatest numbers in East Maui, and fewer than 1% of ʻiʻiwi remain on Kauaʻi. There may be remnant populations on Molokaʻi and Oʻahu; very few ʻiʻiwi have been recorded on either island since the 1990s. They are no longer present on Lānaʻi. 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.<p>These birds are altitudinal migrants; they follow the progress of flowers as they develop at increasing altitudes throughout the year. It has also been noted that birds on Mauna Kea, Hawaiʻi 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 islands such as Molokaʻi. Altitudinal migration complicates population assessment.
Taxonomy
Genus: Drepanis; Family: Fringillidae; Order: Passeriformes.
- Scientific name
- Drepanis coccinea
- Authority
- (Forster, G, 1780)
- Order
- Passeriformes
- Family
- Fringillidae
- Genus
- Drepanis
Range and habitat
- Migration
- Resident species
Behavior
Migration pattern: Resident species.
Conservation
Population trend: declining.
- Population trend
- declining
Photos
Distribution
Bird Calls
Other Birds
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Chordeiles nacunda
Big nighthawk with a short tail and long rounded wings. The body is sandy brown with black spots, contrasting with a white throat and belly. In flight shows white underwings, black outer wings and a prominent white wing patch. Males have a white tip to the tail. Occurs in grasslands, savannas, marshes, and at forest edges; sometimes forming large flocks.
White-breasted Nuthatch
Sitta carolinensis
The largest nuthatch in North America, with distinctive white face, black cap, and blue-gray upperparts. Also note rusty lower belly and undertail coverts. Females have a slightly paler crown than males. Fairly common and widespread, usually in mature woodlands with large trees. Creeps along tree trunks and branches, often upside-down. Sometimes joins mixed flocks with other songbirds. Visits feeders. Listen for insistent yammering calls. Some subtle variation across range, mainly in the darkness of the sides and back, width of the black crown, and vocalizations.
Gray-throated Barbet
Gymnobucco bonapartei
Dark, chunky barbet with an odd tuft of feathers on its forehead. The eye is pale in the eastern part of the range and dark in the west. Usually in small groups on and around dead trees in humid forest and secondary growth. The vocalizations include nasal “squeaky toy” calls, “peet” notes, and a dry rattle. Similar to Naked-faced and Bristle-nosed Barbets, but has a mostly feathered head and a dark bill. Sladen’s Barbet also has a dark bill, but Gray-throated is separated from that species by its feathered head.
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