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This tern has a small population which has shown recent very rapid population reductions at some wintering and breeding sites, which are predicted to continue in the future owing to on-going threats. It is therefore considered Endangered.
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.
Turbott, E. G. 1990. Checklist of the birds of New Zealand. Ornithological Society of New Zealand, Wellington.
The BirdLife Taxonomic Working Group is aware that phylogenetic analyses have been published which have proposed generic rearrangements which may affect this species, but prefers to wait until work by other taxonomists reveals how these changes affect the entire groups involved.
Chlidonias albostriatus Collar and Andrew (1988), Chlidonias albostriatus Collar et al. (1994), Chlidonias albostriatus Sibley and Monroe (1990, 1993), Chlidonias albostriatus albostriatus Collar and Andrew (1988), Chlidonias albostriatus albostriatus Collar et al. (1994), Chlidonias albostriatus albostriatus Sibley and Monroe (1990, 1993)
29 cm. Small, grey tern with black cap. Grey body and wings. Short, forked tail. White underparts. In flight, contrasting white rump. Bright orange legs, bill. Breeding adult, black cap extending to bill. Thin white line along cheek. Non-breeding adult, grey-flecked crown reduced to arc from eye to eye. Juvenile, similar except black-flecked crown, white chin. Similar spp. Whiskered Tern Chlidonias hybrida has even grey on rump. Little Tern S. albifrons has dark primaries on upper wings, yellow bill. Fairy Tern S. nereis has yellow-orange bill. White-fronted Tern S. striata, Common Tern S. hirundo are larger with black bill, legs. Voice Call repetitive kit.
Heather, B. D.; Robertson, H. A. 1997. The field guide to the birds of New Zealand. Oxford University Press, Oxford, UK.
Keedwell, R. J.; Maloney, R. F.; Murray, D. P. 2002. Predator control for protecting kaki (Himantopus novaezelandiae) - lessons from 20 years of management. Biological Conservation 105: 369-374.
Maloney, R. F. 1999. Bird populations in nine braided rivers of the Upper Waitaki Basin, South Island, New Zealand: changes after 30 years. Notornis 46: 243-256.
O'Donnell, C. F. J. 1992. Birdlife of the Ashburton River, Canterbury, New Zealand. Department of Conservation, Christchurch.
Taylor, G. A. 2000. Action plan for seabird conservation in New Zealand. Department of Conservation, Wellington.
Text account compilers
Anderson, O., Benstead, P., Bird, J., Butchart, S., Calvert, R., Mahood, S., McClellan, R., Pilgrim, J., Taylor, J.
Bell, B., Bell, M., Dowding, J., Grant, A., Hitchmough, R., Keedwell, R., Szabo, M., Taylor, G.
IUCN Red List evaluators
Butchart, S., Symes, A.
BirdLife International (2014) Species factsheet: Sterna albostriata. Downloaded from http://www.birdlife.org on 23/04/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/04/2014.
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||Endangered|
|Family||Laridae (Gulls and terns)|
|Species name author||(Gray, 1845)|
|Population size||2500-9999 mature individuals|
|Distribution size (breeding/resident)||93,300 km2|
|Links to further information|
|- Additional Information on this species|