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Bird name:

South Polar Skua

Stercorarius maccormickiOrder: CHARADRIIFORMES Family: Skuas, Gulls, Terns, Skimmers (Laridae)
Codes: Common Name: SPSK Scientific Name: STEMAC ITIS Taxonomic No.: 660062
Least Concern
 
South Polar Skua:  The dark South Polar Skua has a dark brown body and large white patch at the base of the primaries visible in flight.
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Overview

South Polar Skua Dark: Small, gull-like skua, occurs in two color phases. Dark phase adult has dark brown body, large white patch at base of primaries visible in flight. Dark bill, thick and heavy; short, broad tail. Light phase adult has pale gray-brown head and underparts. Strong direct flight.

Range and Habitat

South Polar Skua Dark: Nests in Antarctica in sheltered areas adjacent to penguin colonies. Migrates to offshore Pacific and Atlantic coasts of North America. Pelagic, comes ashore only to breed.

Topo Map: Gull-like Body


Voice Text

"scoo-ah"

Interesting Facts

 The South Polar Skua is named after the naval surgeon Robert McCormick, who collected the first specimen. They were formerly known as the McCormick’s Skua. They are recognized as the world's most southerly bird and have been sighted at the South Pole.

 Until recently, all the skuas of the world were thought to be a single species, but now some experts believe there may be as many as five species. On some southern islands, two forms nest side by side without interbreeding, proving that they are different species.

 During the summer they stake territories near Adélie penguin rookeries, raiding them for eggs, chicks, and also cleaning up carrion. Thus, they have earned the nickname, 'raptor of the south'.

 A group of skuas are collectively known as a "shishkab" of skuas.


Bird Term Glossary



Author

Gary Owen Dick

Artist

Yury Lisyak

Splitbar
Range Map for South Polar Skua

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Family Skuas and Jaegers (Laridae)_blue
Species Stercorarius maccormicki
Length21 Inches
Wingspan52 Inches

South Polar Skua

South Polar Skua Dark: Small, gull-like skua, occurs in two color phases. Dark phase adult has dark brown body, large white patch at base of primaries visible in flight. Dark bill, thick and heavy; short, broad tail. Light phase adult has pale gray-brown head and underparts. Strong direct flight.

● Song: "scoo-ah"

● Foraging & Feeding: South Polar Skua Dark: Feeds mostly on fish. Sometimes chases other birds to steal food.

● Breeding & nesting: South Polar Skua Dark: One to three yellow, green, or brown eggs marked with purple and brown are laid in a shallow ground depression. Incubation ranges from 24 to 34 days and is carried out by both parents.

● Similar species: South Polar Skua Dark: Great Skua has heavy streaks on body and wing coverts and red-brown tones.

Flight Pattern

Swift direct flight with shallow wing beats.
South Polar Skua Dark Body Illustration
● Range & Habitat: South Polar Skua Dark: Nests in Antarctica in sheltered areas adjacent to penguin colonies. Migrates to offshore Pacific and Atlantic coasts of North America. Pelagic, comes ashore only to breed.
BreedingMonogamous, Small colonies
PopulationCasual
MigrationMigratory
Weight40 Ounces
Gull-like BodyX
UnderpartsX
Belly, undertail coverts, chest, flanks, and foreneck.
PrimariesX
The primaries are the flight feathers specialized for flight. They are attached to the "hand" equivalent part of the wing.
PelagicX
The pelagic is a type of bird whose habitat is on the open ocean rather than in a coastal region or on inland bodies of water (lakes, rivers). An example of a pelagic bird is the blacklegged kittiwake.
4 and 6 letter alpha codesX

The four letter common name alpha code is is derived from the first two letters of the common first name and the first two letters of common last name. The six letter species name alpha code is derived from the first three letters of the scientific name (genus) and the first three letters of the scientific name (species). See (1) below for the rules used to create the codes..

Four-letter (for English common names) and six-letter (for scientific names) species alpha codes were developed by Pyle and DeSante (2003, North American Bird-Bander 28:64-79) to reflect A.O.U. taxonomy and nomenclature (A.O.U. 1998) as modified by Supplements 42 (Auk 117:847-858, 2000) and 43 (Auk 119:897-906, 2002). The list has been updated by Pyle and DeSante to reflect changes reported by the A.O.U from 2003 through 2006.

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ITIS CodesX

The Integrated Taxonomic Information System (ITIS) was established in the mid-1990�s as a cooperative project among several federal agencies to improve and expand upon taxonomic data (known as the NODC Taxonomic Code) maintained by the National Oceanographic Data Center (NODC), National Oceanic and Atmospheric Administration (NOAA).

To find the ITIS page for a bird species go to the ITIS web site advanced search and report page at http://www.itis.gov/advanced_search.html. You can enter the TSN or the common name of the bird. It will return the ITIS page for that bird. Another way to obtain the ITIS page is to use the Google search engine. Enter the string ITIS followed by the taxonomic ID, for example "ITIS 178041" will return the page for the Allen's Hummingbird.

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Parts of a Standing birdX
Head Feathers and MarkingsX
Parts of a Flying birdX