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Sterna fuscata

(Sooty 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:

Roetsterretjie

Common Names in Dutch:

Bonte Stern

Common Names in English:

egg bird, Sooty Tern, wide-awake

Common Names in French:

Sterne fuligineuse

Common Names in German:

Russ-Seeschwalbe, Rußseeschwalbe

Common Names in Hebrew:

שחפית כהה

Common Names in Italian:

Rondine di mare oscura, Sterna scura

Common Names in Japanese:

セグロアジサシ

Common Names in Russian:

Темная крачка

Common Names in Spanish:

Charr, Charrán sombrío, Charrán sombrío

Common Names in Swedish:

Sottärna

Description

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Physical Description

Adult : Head : Cap: blackish brown Face : Forehead: white patch on blackish brown Bill: black Body: Underparts: white Upperparts: blackish brown Legs : Foot Color: black Leg Color: black Tail: blackish brown with white edge Shape : deeply forked.

Size/Age/Growth

About 16 to 17 inches long, with a wingspan of 32 to 34 inches. Adults weigh about 6.3 ounces .

Habitat

Ecology: Behaviour The species is dispersive and migratory2. At most colonies adults leave for the open sea after breeding1 and become strongly pelagic2 for 2-3 months before returning to the breeding grounds1. On returning to the breeding colonies they continue to forage pelagically by day and settle on land at night for a further 2-3 months before beginning to breed1. The timing of breeding varies throughout the species's range , with nesting occurring all year round at some colony sites but seasonally at others1. The species nests in very large colonies1 and remains gregarious throughout the year (congregating in small to large flocks to feed at sea ) although it may be observed singly2. Habitat Breeding It breeds on flat, open, sparsely or heavily vegetated, oceanic or barrier islands of sand , coral or rock in productive tropical and subtropical offshore waters rich in plankton , fish and squid1. It is absent from cold current areas and generally avoids islands with terrestrial predators1. Non-breeding Outside of the breeding season the species is highly pelagic but generally avoids cold current areas1. Diet Its diet consists predominantly of fish up to 18 cm long (usually 6-8 cm) and squid, but it also occasionally takes crustaceans, insects and offal1. The species is reliant upon prey driven to the surface by predatory fish (e.g. tuna , Scombidae), especially when breeding2. Breeding site The nest is a slight depression1 or scrape on the ground2. It shows a preference for nesting on flat, bare sand, coral grit or shell1, 2 amongst low vegetation1, 2 on beaches above the high-water mark2 or on coral islands, atolls and sandbanks2. Less often it may nest on rock stacks or other offshore islets , and on ledges or terraces of cliffs (although it avoids sheer cliff-faces)2. It nests in dense colonies within which neighbouring nests may be placed c.50 cm apart1. Higher nesting densities occur in areas where bare ground predominates but which are vegetated with plants greater than or equal to 15 cm tall8. Management information The mortality of the species was significantly reduced on Isla Isabel (a densely forested tropical island off the Pacific coast of Mexico) by the eradication of introduced domestic cats Felis catus using a combination of poisoning , trapping and hunting with firearms7. The nesting density and therefore the number of breeding pairs was increased in colonies on Bird Island by clearing areas of dense native or introduced vegetation and burning existing colony areas annually to prevent the growth of woody plants8.

[1].

List of Habitats :

Biology

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Diet

Almost Exclusively:

Fish

Lesser Quantities of: Aquatic Invertebrates

Reproduction

Migration

Migratory

Taxonomy

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Notes

Name Status: Accepted Name .

Last scrutiny: 24-Jun-1996

Similar Species

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Bridled 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 March 10, 2008:

Identifiers

Footnotes

  1. BirdLife International 2009. Sterna fuscata. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 05 February 2012. [back]
Last Revised: 7/14/2012