Lesser Noddy Anous tenuirostris


Taxonomic source(s)
Christidis, L. and Boles, W.E. 2008. Systematics and Taxonomy of Australian Birds. CSIRO Publishing, Collingwood, Australia.
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2018 Least Concern
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency Does not normally occur in forest
Land mass type Average mass -

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 19,500,000 medium
Extent of Occurrence non-breeding (km2) 37,700,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals poor estimated 2009
Population trend Stable suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 11.5 - - -

Population justification: The species has a large global population with an estimated minimum of 1,200,000 individuals (Delany and Scott 2006). In the Houtman Albrolhos, populations were estimated at 7,665, 6,325 and 34,895 pairs on Morley, Wooded and Pelsart Island respectively in 1993 (Higgins and Davies 1996).

Trend justification: The overall population trend is stable, although some populations have unknown trends (Delany and Scott 2006).

Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Australia N Extant Yes
British Indian Ocean Territory N Extant Yes
Comoros V Extant Yes
French Southern Territories U Extant
Kenya V Extant Yes
Madagascar U Extant
Maldives N Extant Yes
Mauritius N Extant Yes
Mayotte (to France) U Extant
Mozambique U Extant
Oman N Extant Yes
Réunion (to France) U Extant
Seychelles N Extant Yes
South Africa V Extant Yes
Sri Lanka V Extant
Tanzania N Extant Yes
Tonga N Extant Yes
United Arab Emirates V Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Mauritius Serpent Island
Mauritius Cargados Carajos Shoals
Seychelles Aride Island Special Reserve
Seychelles Cousin Island Special Reserve
Seychelles Cousine island
Seychelles Frégate island
Seychelles Marie-Louise Island
Maldives Haa Alifu Atoll
British Indian Ocean Territory South Brother, Chagos Bank
British Indian Ocean Territory Nelson Island
British Indian Ocean Territory Petite Ile Bois Mangue, Peros Banhos
Australia Houtman Abrolhos
French Polynesia Tubuai, Motu Toena
French Polynesia Akamaru island
French Polynesia Mangareva
French Polynesia Motu Teiku
French Polynesia Bora Bora
French Polynesia Huahine
French Polynesia Maiao
French Polynesia Maupiti
French Polynesia Mehetia
French Polynesia Tupai
French Polynesia Anuanuraro
French Polynesia Anuanurunga
French Polynesia Fakarava Atolls
French Polynesia Haraiki
French Polynesia Hereheretue
French Polynesia Manuhangi
French Polynesia Motutunga
French Polynesia Nukutepipi
French Polynesia Tekokota
French Polynesia Tikehau
New Zealand Kermadec Islands (Curtis Island)
Australia Houtman Abrolhos - Marine
Mauritius Round Island / Serpent Island - Marine
Mauritius Cargados Carajos shoals (Saint Brandon) - Marine
Seychelles African Banks / Boudeuse island / Etoile island / Marie Louise island - Marine
Seychelles Aride island - Marine
British Indian Ocean Territory Danger Island, Chagos Bank - Marine
British Indian Ocean Territory Western Great Chagos Bank island group
British Indian Ocean Territory Eastern Peros Banhos island group

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Marine Coastal/Supratidal Sea Cliffs and Rocky Offshore Islands major resident
Marine Neritic Macroalgal/Kelp major resident
Marine Neritic Pelagic major resident
Marine Neritic Seagrass (Submerged) major resident
Marine Neritic Subtidal Loose Rock/pebble/gravel major resident
Marine Neritic Subtidal Rock and Rocky Reefs major resident
Marine Neritic Subtidal Sandy major resident
Marine Neritic Subtidal Sandy-Mud major resident
Marine Oceanic Epipelagic (0-200m) suitable resident
Marine Oceanic Mesopelagic (200-1000m) suitable resident
Altitude   Occasional altitudinal limits  

Recommended citation
BirdLife International (2021) Species factsheet: Anous tenuirostris. Downloaded from on 18/10/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from on 18/10/2021.