Data Zone
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.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| 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 |
| 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 | - |
| 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 | Presence | Origin | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Australia | extant | native | yes | |||
| British Indian Ocean Territory | extant | native | yes | |||
| Comoros | extant | vagrant | yes | |||
| French Southern Territories | extant | uncertain | ||||
| Kenya | extant | vagrant | yes | |||
| Madagascar | extant | uncertain | ||||
| Maldives | extant | native | yes | |||
| Mauritius | extant | native | yes | |||
| Mayotte (to France) | extant | uncertain | ||||
| Mozambique | extant | uncertain | ||||
| Oman | extant | native | yes | |||
| Réunion (to France) | extant | uncertain | ||||
| Seychelles | extant | native | yes | |||
| South Africa | extant | vagrant | yes | |||
| Sri Lanka | extant | vagrant | ||||
| Tanzania | extant | native | yes | |||
| Tonga | extant | native | yes | |||
| United Arab Emirates | extant | vagrant | yes |
| Country/Territory | IBA Name |
|---|---|
| Australia | Houtman Abrolhos |
| Australia | Houtman Abrolhos - Marine |
| British Indian Ocean Territory | Danger Island, Chagos Bank - Marine |
| British Indian Ocean Territory | Eastern Peros Banhos island group |
| British Indian Ocean Territory | Nelson Island |
| British Indian Ocean Territory | Western Great Chagos Bank island group |
| Maldives | Haa Alifu Atoll |
| Mauritius | Cargados Carajos Shoals |
| Mauritius | Cargados Carajos shoals (Saint Brandon) - Marine |
| Mauritius | Round Island / Serpent Island - Marine |
| Mauritius | Serpent Island |
| Seychelles | African Banks / Boudeuse island / Etoile island / Marie Louise island - Marine |
| Seychelles | Aride island - Marine |
| Seychelles | Aride Island Special Reserve |
| Seychelles | Cousin Island Special Reserve |
| Seychelles | Cousine island |
| Seychelles | Frégate island |
| Seychelles | Marie-Louise Island |
| 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 (2023) Species factsheet: Anous tenuirostris. Downloaded from
http://datazone.birdlife.org/species/factsheet/lesser-noddy-anous-tenuirostris on 06/06/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://datazone.birdlife.org on 06/06/2023.
