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Sterna maxima

(royal tern)

Overview

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Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in Afrikaans:

Koningsterretjie

Common Names in Dutch:

Koningsstern

Common Names in English:

royal tern, tern

Common Names in French:

Sterne royale

Common Names in German:

Königseeschwalbe, Königsseeschwalbe

Common Names in Japanese:

アメリカオオアジサシ

Common Names in Russian:

Королевская крачка

Common Names in Spanish:

Charr, Charrán real, Charrán real

Common Names in Swedish:

Kungstärna

Description

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Physical Description

Adult Summer: Head : black Crest : black Bill: pumpkin-orange to yellow-orange Body: white Mantle: pale-gray Legs : Foot Color: black Leg Color: black.

Color:

Adult alternate: Black legs · Black cap · White face , neck, breast, and belly · Pale gray back and upperwings · White rump and tail, often with dark edgings · Plumage held in Spring (March to May)

Adult basic: White forehead and crown · Black mask extends rearward from eye to spiky crest at rear of head · White eye ring in dark mask · Outer primaries and tail feathers darken with wear, becoming dark gray in basic plumage

Juvenile : Pale legs · White forehead and crown · Dark brown mask extending rearward from eye to spiky crest at rear of head · White neck, breast, and belly · Pale gray back · Dark brown carpal bar · Dark brown uppersurface to secondaries and outer primaries · Gray tail with dark margins

Immature : First-year birds generally have dark secondaries and outer primaries, and a slightly more extensive black mask · Second-year birds are generally very similar to adults in alternate plumage but often have darker primaries and secondaries and white tips to feathers in black cap

Size/Age/Growth

About 18 to 21 inches long, with a wingspan of 42 to 44 inches. Adults weigh about 16 ounces .

Habitat

Biome: Marine .

Ecology: Behaviour This species undergoes post-breeding dispersive movements northwards before migrating southwards for the winter1. It breeds between April and June2 in dense colonies of 100-4,000 pairs often near colonies of Laughing Gull Larus atricilla and Sandwich Tern Sterna sandvicensis1. The species may also nest singly amidst colonies of other tern species1. It usually feeds singly or in small flocks and roosts gregariously even outside of the breeding season1. Habitat Breeding For breeding the species shows a preference for inaccessible sites including barren sandy beaches, islands in saltmarsh, dredge spoil and coral islands surrounded by shallow water and with a high degree of visibility , no mammalian predators and little vegetation1. It also forages along estuaries, in lagoons and in mangroves during this season , mostly within 100 m of the shore but up to 40 km from the breeding colony1. Non-breeding Outside of the breeding season the species forages within 100 m of the land along sheltered coasts in estuaries, harbours and river mouths , sometimes also foraging a short distance inland along broad rivers1. Diet Its diet consists predominantly of small fish 3-18 cm long as well as squid, shrimps and crabs1. Breeding site The nest is a simple scrape1 in sand3 in inaccessible sites surrounded by shallow water near the mouths of bays with a high degree of visibility, no mammalian predators and little vegetation1. Management information The preferred breeding sites of this species are often vulnerable to flooding1.[1].

List of Habitats :

[more info]

Biology

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Diet

Almost entirely fish, with some aquatic invertebrates .

Reproduction

Clutch Size: 1-2 Length of Incubation : 30-31 days Days to Fledge : 28-35 Number of Broods: 1

Migration

Migratory

Taxonomy

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Synonyms

Thalasseus maxima (Boddaert

Notes

Name Status: Accepted Name .

Last scrutiny: 18-Jan-2005

Similar Species

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Elegant Tern, Caspian Tern

Members of the genus Sterna

ZipcodeZoo has pages for 63 species and subspecies in this genus:

S. acuticauda (Black-Bellied Tern) · S. albifrons (Little Striker) · S. albifrons albifrons (Little Tern) · S. albifrons athalassos (Little Tern) · S. albistriata (Black-Fronted Tern) · S. albostriata (Saunder's Little Tern) · S. aleutica (Aleutian Tern) · S. anaetheta (Bridled Tern) · S. anaethetus (Brown-Winged Tern) · S. anaethetus anaethetus (Brown-Winged Tern) · S. anaethetus recognita (Bridled Tern) · S. antillarum (American Least Tern) · S. antillarum albifrons (Little Tern) · S. antillarum antillarum (Least Tern) · S. antillarum athalassos (Interior Least Tern) · S. antillarum browni (California Least Tern) · S. aurantia (Indian River Tern) · S. balaenarum (Damara Tern) · S. bengalensis (Lesser Crester Tern) · S. bengalensis bengalensis (Lesser Crester Tern) · S. bergii (Greater Crested Tern) · S. bergii bergii (Greater Crested Tern) · S. bernsteini (Chinese Crested-Tern) · S. caspia (Caspian Tern) · S. caspia caspia (Caspian Tern) · S. dougallii (Roseate) · S. dougallii dougallii (Roseate Tern) · (Elegant Tern) · S. eurygnatha (Cayenne Tern) · S. forsteri (ForsterÌs Tern) · S. fuscata (Wide-Awake) · S. fuscata crissalis (Sooty Tern) · S. fuscata fuscata (Sooty Tern) · S. hirundinacea (South American Tern) · S. hirundo (Lake Erie Gull) · S. hirundo hirundo (Common Tern) · S. lorata (Peruvian Tern) · S. lunata (Grey-Backed Tern) · S. maxima (Royal Tern) · S. maxima maxima (Royal Tern) · S. melanogaster (Black-Bellied Tern) · S. nereis (Fairy Tern) · S. nereis nereis (Fairy Tern) · S. nilotica (Bulled-Billed Tern) · S. nilotica groenvoldi (Gull-Billed Tern) · S. nilotica nilotica (Gull-Billed Tern) · S. nilotica vanrossemi (Gull-Billed Tern) · S. paradisaea (Crimson-Billed Tern) · S. repressa (White-Cheeked Tern) · S. sandvicensis (Caribbean Tern) · S. sandvicensis eurygnatha (Sandwich Tern) · S. sandvicensis sandvicensis (Caribbean Tern) · S. saundersi (Saunders' Little Tern) · S. striata (White-Fronted Tern) · S. striata striata (White-Fronted Tern) · S. sumatrana (Black-Naped Tern) · S. sumatrana sumatrana (Black-Naped Tern) · S. superciliaris (Yellow-Billed Tern) · S. trudeaui (Snowy-Crowned Tern) · S. virgata (Kerguelen Tern) · S. vittata (Antarctic Tern) · S. vittata vittata (Antarctic Tern) · S. zimmermanni (Chinese Crested-Tern)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 12, 2007:

Identifiers

Footnotes

  1. BirdLife International 2009. Sterna maxima. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 05 February 2012. [back]
Last Revised: 2012-07-16