This article is about the rail (Rallidae) living in Auckland Islands. For the rail system in Auckland, see Transdev Auckland.
Auckland rail
Illustration by John Gerrard Keulemans, 1905
Conservation status
Vulnerable (IUCN 3.1)[1]
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Aves
Order:
Gruiformes
Family:
Rallidae
Genus:
Lewinia
Species:
L. muelleri
Binomial name
Lewinia muelleri
(Rothschild, 1893)
The Auckland rail or Auckland Islands rail (Lewinia muelleri) is a small nearly flightless rail endemic to the Auckland Islands 460 km south of New Zealand. It is somewhat of a biogeographical anomaly, being the only species in the genus Lewinia to have reached the islands of New Zealand, skipping over[citation needed] the main islands to reach the remote Auckland group. Its closest relative is Lewin's rail of Australia. The species is currently restricted to two islands in the Auckland group, Adams Island and Disappointment Island.
The Auckland rail is a small rail with chestnut back plumage and a grey breast. The flanks are barred black and white and the head is red-brown, with a red bill. It is smaller than the Australian Lewin's rail. There are conflicting reports about its ability to fly. Early accounts suggested it could; recent researchers have found little evidence for this. If the species is able to fly, it does so very infrequently. Auckland rails have a variety of calls, the most common being a crex call made at one second intervals 10 or more times in a row. The function of the calls is unknown.
Auckland rail chick, taken with trail camera on Adams Island in 2024.
Little is known about the reproductive biology of the Auckland rail. The few nests that have been found contained clutches of two eggs, probably laid in early November. The eggs are cream coloured with red, brown and grey spots.
The Auckland rail is highly secretive and was considered to be extinct for many years before its rediscovery. The population of about 1500 birds[2] is currently stable on the two islands it survives on. It is thought to have become extinct on the main Auckland Islands due to the presence of introduced feral cats and pigs; it is hoped the eventual removal of these from the islands will allow for reintroductions to other islands in the group. The species is currently considered vulnerable by the IUCN and BirdLife International due to the possibility of rats or other predators reaching the two islands it survives on.
^BirdLife International (2016). "Lewinia muelleri". IUCN Red List of Threatened Species. 2016: e.T22692529A93357313. doi:10.2305/IUCN.UK.2016-3.RLTS.T22692529A93357313.en. Retrieved 13 November 2021.
^Elliot, G.P. (2022). "Auckland Island rail". NZ Birds Online. Retrieved 29 August 2022.
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