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Bird name:

Wedge-rumped Storm-Petrel

Oceanodroma tethysOrder: PROCELLARIIFORMES Family: Storm-Petrels (Hydrobatidae)
Codes: Common Name: WRSP Scientific Name: OCETET ITIS Taxonomic No.: 174638

Breeding Location:

Islands, sandy or rocky



Breeding Type:

Monogamous, Colonial, Mates for life



Breeding Population:

Casual



Egg Color:

White



Number of Eggs:

1



Incubation Days:

41 - 42



Egg Incubator:

Both sexes



Nest Material:

No material added to nest.



Migration:

Migratory



Splitbar

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General

Wedge-rumped Storm-Petrel: Small storm-petrel, black-brown overall with large white patch on rump and central tail. Sexes are similar.

Range and Habitat

Wedge-rumped Storm-Petrel: Breeds on Galapagos Islands and islands off the coast of Peru. In fall and winter is casual off the Pacific Coast north to the central California coast.

Breeding and Nesting

Wedge-rumped Storm-Petrel: A single white egg is laid in a rock crevice or burrow under a shrub. Incubation ranges from 41 to 42 days and is carried out by both parents.

Foraging and Feeding

Wedge-rumped Storm-Petrel: Eats mollusks, small crustaceans, plankton, and small fish. Usually feeds far out at sea, swooping down to snatch food from the surface.

Vocalization

Wedge-rumped Storm-Petrel: Silent at sea. On breeding grounds gives soft growling calls.

Similar Species

Wedge-rumped Storm-Petrel: Wilson's Storm-Petrel is larger with yellow feet and U-shaped rump patch that reaches only the middle of black tail.

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Family Storm-Petrel (Hydrobatidae)_blue
Species Oceanodroma tethys
Length6.5 - 7.25 Inches
Wingspan14.125 Inches

Wedge-rumped Storm-Petrel

Wedge-rumped Storm-Petrel: Small storm-petrel, black-brown overall with large white patch on rump and central tail. Bill, legs, and feet are black. Feeds far out to sea. Flight is swift and direct, with deep wing beats and much banking and twisting. Often flies high above the surface of the water.

● Song: "chirka"

● Foraging & Feeding: Wedge-rumped Storm-Petrel: Eats mollusks, small crustaceans, plankton, and small fish. Usually feeds far out at sea, swooping down to snatch food from the surface.

● Breeding & nesting: Wedge-rumped Storm-Petrel: A single white egg is laid in a rock crevice or burrow under a shrub. Incubation ranges from 41 to 42 days and is carried out by both parents.

● Similar species: Wedge-rumped Storm-Petrel: Wilson's Storm-Petrel is larger with yellow feet and U-shaped rump patch that reaches only the middle of black tail.

Flight Pattern

Swift direct flight with deep wing beats and much twisting and banking.
Wedge-rumped Storm-Petrel Body Illustration
● Range & Habitat: Wedge-rumped Storm-Petrel: Breeds on Galapagos Islands and islands off the coast of Peru. In fall and winter is casual off the Pacific Coast north to the central California coast.
BreedingMonogamous, Colonial, Mates for life
PopulationCasual
MigrationMigratory
Weight0.8 Ounces
RumpX
The area between the uppertail coverts and the back of the bird.
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