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This species qualifies as Critically Endangered because the very rapid rate of decline in its very small global population observed over the past three generations is expected to increase owing to habitat loss and degradation combined with the impact of introduced predators including brown tree snake Boiga irregularis on Saipan. This snake is a likely factor in the reed-warbler's extirpation from Guam.
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.
Gender agreement of species name follows David and Gosselin (2002a).
Acrocephalus luscinia Sibley and Monroe (1990, 1993), Acrocephalus luscinia Collar et al. (1994), Acrocephalus luscinia BirdLife International (2000), Acrocephalus luscinia luscinia BirdLife International (2000), Acrocephalus luscinia luscinia Collar et al. (1994), Acrocephalus luscinia luscinia Sibley and Monroe (1990, 1993)
18 cm. Large, lanky, scruffy-looking warbler with long bill and often dishevelled feathers and erect head feathers when singing. Dingy olive-yellow above, with dull yellow eyebrow and underparts. Voice Call a loud distinctive chuck or tchack. Males sing long, loud, varied and complex song. Hints Skulks in dense thickets, more often heard than seen. Sometimes sings at night. Male most often sings from exposed perches.
Related state of the world's birds case studies
Engbring, J.; Ramsey, F. L.; Wildman, V. J. 1982. Micronesian forest bird survey, 1982: Saipan, Tinian, Agiguan, and Rota. U.S. Fish and Wildlife Service, Honolulu.
Reichel, J. D.; Wiles, G. J.; Glass, P. O. 1992. Island extinctions: the case of the endangered Nightingale Reed-warbler. Wilson Bulletin 104: 44-54.
Craig, R. J. 1996. Seasonal population surveys and natural history of a Micronesian bird community. Wilson Bulletin 108: 246-267.
U. S. Fish and Wildlife Service. 1998. Recovery plan for the Nightingale Reed-warbler Acrocephalus luscinia.
Esselstyn, J., J. B. Cruz, L.L. Williams, and N. Hawley. 2003. Wildlife and vegetation surveys: Aguiguan 2002.
Camp, R. J. 2008. Trends in bird populations on Saipan.
Camp, R. J.; Pratt, T. K.; Marshall, A. P.; Amidon, F.; Williams, L. L. 2009. Recent status and trends of the land bird avifauna on Saipan, Mariana Islands, with emphasis on the endangered Nightingale Reed-warbler (Acrocephalus luscinia). Bird Conservation International 19(4): 323-337.
Camp, R. J., T. K. Pratt, F. Amidon, A. P. Marshall, S. Kremer, and M. Laut. 2009. Status and trends of the land bird avifauna on Tinian and Aguiguan, Mariana Islands. Appendix 3.1. Terrestrial Resource surveys of Tinian and Aguiguan, Mariana Islands, 2008. Working Draft. . U.S. Fish and Wildlife Service, Pacific Islands Fish and Wildlife Office, Honolulu, HI.
Marshall, A., Amidon, F. and Radley, P. 2011. Nightingale reed-warbler surveys on Alamagan. Appendix 1. Status of the Micronesian Megapode in the Commonwealth of the Northern Mariana Islands. U.S. Fish and Wildlife Service report to the U.S. Navy. Honolulu, Hawaii.
Rodda, G.H., and Savidge, J .A. 2007. Biology and impacts of Pacific Island invasive species. 2. Boiga irregularis, the brown tree snake (Reptilia: Colubridae). Pacific Science 61: 307-324.
Kennerley, P.; Pearson, D. 2010. Reed and bush warblers. Christopher Helm, London.
Mosher, S.M. and Fancy, S.G. 2002. Description of nests, eggs, and nestlings of the endangered nightingale reed-warbler on Saipan, Micronesia. Wilson Bulletin 114(1): 1-10.
Mosher, S. M. Submitted. Ecology of the endangered Nightingale Reed-Warbler (Acrocephalus luscinia) on Saipan, Micronesia. MSc Thesis. University of Idaho.
Further web sources of information
Hear sounds for this species from xeno-canto, the community database of shared bird sounds from around the world.
Text account compilers
Benstead, P., Bird, J., Calvert, R., Derhé, M., Khwaja, N., Mahood, S., O'Brien, A., Stattersfield, A.
Amidon, F., Camp, R., Dutson, G., Freifeld, H., Mosher, S., Radley, P., Saunders, A.
IUCN Red List evaluators
Butchart, S., Symes, A.
BirdLife International (2013) Species factsheet: Acrocephalus luscinius. Downloaded from http://www.birdlife.org on 20/05/2013. Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 20/05/2013.
This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.
To provide new information to update this factsheet or to correct any errors, please email BirdLife
To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.
Additional resources for this species
|Current IUCN Red List category||Critically Endangered|
|Family||Sylviidae (Old World warblers)|
|Species name author||(Quoy & Gaimard, 1830)|
|Population size||2000-2499 mature individuals|
|Distribution size (breeding/resident)||140 km2|
|Links to further information|
|- Additional Information on this species|