||Myadestes lanaiensis (Wilson, 1891)
||Olomao, Hawaiian Thrush, Oloma'o
||del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.
||18 cm. Small, drab thrush. Brown above, pale grey below, darkest on throat. Pale buff undertail-coverts. Similar spp. Introduced Melodious Laughingthrush Garrulax canorus brighter cinnamon-brown with yellow bill. Introduced Japanese Bush-warbler Cettia diphone much smaller and slimmer with noticeable pale eyebrow. Voice Song a halting, thrush-like melody. Call a cat-like rasp.
|Red List Category & Criteria:
||Butchart, S. & Symes, A.
||Baker, H., Baker, P., Camp, R., Fretz, J., Gorresen, M., Lepson, J., VanderWerf, E., Wakelee, K. & Woodworth, B.
||Benstead, P., Bird, J., Butchart, S., Harding, M., Isherwood, I., Khwaja, N., Stattersfield, A., Stuart, T., Symes, A. & Derhé, M.
The last well-documented sighting of this species was in 1994 (Clement and Hathway 2000), with an unconfirmed report in 1988, and no subsequent records despite further surveys in most of the historical range in Kamako'u-Pelekunu. It may have been driven extinct by disease spread by introduced mosquitoes, and as a result of habitat destruction. However, it cannot yet be presumed to be Extinct because the remote Oloku'i Plateau has not been resurveyed recently and could conceivably still harbour some birds. Any remaining population is likely to be tiny, and for these reasons it is treated as Critically Endangered (Possibly Extinct).
|Date last seen:
|Previously published Red List assessments:|
- 2013 – Critically Endangered (CR)
- 2012 – Critically Endangered (CR)
- 2009 – Critically Endangered (CR)
- 2008 – Critically Endangered (CR)
- 2004 – Critically Endangered (CR)
- 2000 – Critically Endangered (CR)
- 1996 – Critically Endangered (CR)
- 1994 – Critically Endangered (CR)
- 1988 – Threatened (T)
|Range Description:||Myadestes lanaiensis is endemic to the central Hawaiian Islands, U.S.A., where it is (or was) known from Maui, Lana'i and Moloka'i. . The nominate subspecies of Lana'i was last seen in 1933 and is now extinct. The race rutha of Moloka'i and Maui is also likely to be extinct (Clement and Hathway 2000). It had been extirpated from Maui before ornithologists arrived, but possibly survived until the mid-19th century (J. Lepson in litt. 1999). Most of the historical range on Moloka'i in Kamako'u-Pelekunu has been resurveyed and the species has probably been extirpated from that area (DOFAW and PIERC 1995, Reynolds and Snetsinger 2001 unpubl. data); the last well-documented record from Moloka'i was in 1994 (Clement and Hathway 2000). However, it cannot yet be presumed to be Extinct because the remote Oloku'i Plateau has not been resurveyed recently and could conceivably still harbour some birds. Any remaining population is likely to be tiny. |
United States (Hawaiian Is.)
|♦ Continuing decline in area of occupancy (AOO):||Unknown|
|♦ Extreme fluctuations in area of occupancy (AOO):||No||♦ Estimated extent of occurrence (EOO) - km2:||19|
|♦ Continuing decline in extent of occurrence (EOO):||Unknown||♦ Extreme fluctuations in extent of occurrence (EOO):||No|
|♦ Number of Locations:||1||♦ Continuing decline in number of locations:||Unknown|
|♦ Extreme fluctuations in the number of locations:||No||♦ Lower elevation limit (metres):||1000|
|Range Map:||Click here to open the map viewer and explore range.|