Justification of Red List Category
This species is Extinct. It was not recorded since the type series collection in 1838 or 1839 (Holyoak and Thibault 1978, Kennerley and Pearson 2010). Given that the precise home of this distinctive Acrocephalus has never been determined, the causes of this extinction are unknown.
This species is known from a specimen thought to have come from Yap, Federated States of Micronesia in 1838 or 1839. It has not been recorded since and hence is considered extinct (Holyoak and Thibault 1978, Kennerley and Pearson 2010).
18 cm. Large, lanky, scruffy-looking warbler with long bill and remarkably stout legs and feet. Lost to the world prior to any documentation of voice or behaviour.
Text account compilers
Wright, L, O'Brien, A., Westrip, J., Benstead, P., Martin, R, Khwaja, N., Calvert, R., Derhé, M., Mahood, S., Symes, A., Bird, J., Stattersfield, A.
Saunders, A., Mosher, S., Freifeld, H., Dutson, G., Gourley, J., Amidon, F., Radley, P., Camp, R.
BirdLife International (2019) Species factsheet: Acrocephalus astrolabii. Downloaded from http://www.birdlife.org on 24/04/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 24/04/2019.