Procelsterna cerulea


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Procelsterna cerulea
Species Authority: (Bennett, 1840)
Common Name/s:
English Blue Noddy, Blue-gray Noddy, Blue-grey Noddy, Grey Ternlet
Taxonomic Notes: Procelsterna cerulea (Sibley and Monroe 1990, 1993) was split into P. cerulea and P. albivitta by SACC (2005). This treatment is not followed by the BirdLife Taxonomic Working Group because other potential subspecies of P. albivitta (albivitta and skottsbergii) are not split by other standard sources: AOU (1998), Christidis and Boles (1994), Sibley and Monroe (1990, 1993) and Turbott (1990).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2012
Date Assessed: 2012-05-01
Assessor/s: BirdLife International
Reviewer/s: Butchart, S. & Symes, A.
Facilitator/s: Ekstrom, J., Butchart, S., Calvert, R.
This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size may be moderately small to large, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

Geographic Range [top]

Range Description: The Blue Noddy is found in the central and western Pacific Ocean, in American Samoa, the Cook Islands, Fiji, French Polynesia, Kiribati, Marshall Islands, New Caledonia (to France), Samoa, Tonga (Niua), Tuvalu and the Hawaiian Islands (USA) (del Hoyo et al. 1996).
American Samoa (American Samoa); Australia; Chile; Cook Islands; Fiji; French Polynesia; Kiribati; Marshall Islands; New Caledonia; New Zealand; Norfolk Island; Pitcairn; Samoa; Tonga; United States
Japan; Tuvalu
Present - origin uncertain:
Micronesia, Federated States of ; Nauru; Niue; Solomon Islands; Tokelau; United States Minor Outlying Islands; Vanuatu; Wallis and Futuna
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The population is estimated to number 27,000-120,000 individuals, including totals for Procelsterna albivitta.
Population Trend: Stable

Habitat and Ecology [top]

Habitat and Ecology: This species takes very small fish (average length 17 mm), squid, crustaceans and pelagic sea striders with proportions varying seasonally and geographically. It feeds on the wing by dipping or pattering. Breeding can be continual in places (e.g. Hawaii) and occurs in loose colonies on cliffs or rocky areas (del Hoyo et al. 1996).
Systems: Terrestrial; Marine
Citation: BirdLife International 2012. Procelsterna cerulea. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <>. Downloaded on 24 April 2014.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please fill in the feedback form so that we can correct or extend the information provided