Gelochelidon nilotica   Gmelin, 1789

Gull-billed tern
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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

| Charadriiformes | Laridae

Environment: milieu / climate zone / depth range / distribution range Ecologia

; salmastro.  Tropical; 56°N - 44°S, 116°W - 173°E (Ref. 124582)

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Introduzioni

Indo-Pacific, Atlantic Ocean and the Mediterranean.

Length at first maturity / Size / Peso / Age

Maturity: Lm ?  range ? - ? cm Max length : 43.0 cm TL maschio/sesso non determinato; (Ref. 8812); Peso massimo pubblicato: 290.00 g (Ref. 356)

Short description Morfologia

Culmen: 4.1 cm; tarsus: 2.3 cm; wing: 33.0 cm.

Biologia     Glossario (es. epibenthic)

Total Length: 35 to 43 cm; Wingspan: 86 to 103 cm (Ref. 8812). Total population is 55,000 pairs, mostly in Asia, 40,000 pairs. European population of about 6,800 to 160,000 pairs is declining due to loss of habitat (Ref. 84934). Surface seizing; coastal; coastal Islands (Ref. 356). Feeds by dipping to the sea surface with occasional plunge-dives. Breeds colonially in salt marshes, salt works, coastal dunes, islands and freshwater lagoons in southern North America, Caribbean, South America, Europe, Asia, Australia and northern Africa (Ref. 84934). Gull-billed terns are observed to display group adherence. This species has a high nest fidelity in stable habitats, and yet when environmental disasters occur, they retain their mates and settle with the same neighbors at the breeding locality (Ref. 87784).

Life cycle and mating behavior Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

Main reference Bibliografia | Coordinatore | Collaboratori

Enticott, J. and D. Tipling. 1997. (Ref. 84934)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 14 August 2019

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Appendix II: Migratory species conserved through agreements

Threat to humans

Human uses


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Strumenti

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Informazioni ulteriori

Stati
Aree FAO
Ecosystems
Presenze
Introduzioni
Stocks
Ecologia
Dieta
Prede
Nomi Comuni
Sinonimi
Predatori
Riproduzione
Maturità
Deposizione
Fecundity
Uova
Egg development
Age/Size
Accrescimento
Length-weight
Length-length
Morfologia
Larve
Abbondanza
Bibliografia
Mass conversion
Collaboratori
Immagini

Fonti Internet

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, ricerca) | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 12.1 - 29.1, mean 27.1 (based on 5421 cells).
Vulnerability (Ref. 71543): Low to moderate vulnerability (33 of 100).
Price category (Ref. 80766): Unknown.