Guadalupe wave runner

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Guadalupe wave runner
Oceanodroma macrodactyla (Guadalupe petrel) .jpg

Guadalupe wave runner ( Hydrobates macrodactylus )

Systematics
Class : Birds (aves)
Order : Tubular noses (Procellariiformes)
Family : Northern petrels (Hydrobatidae)
Genre : Hydrobates
Type : Guadalupe wave runner
Scientific name
Hydrobates macrodactylus
( Bryant , 1887)

The Guadalupe Storm Petrel ( Hydrobates macrodactylus , Syn. : Oceanodroma macrodactyla ), also known as Guadalupe Storm Petrel called, is a potentially extinct seabird from the family of the Northern petrels . It is or was endemic to the Mexican Pacific island of Guadalupe .

description

The wave runner also breeds on Guadalupe and is easily confused with the Guadalupe wave runner.

The Guadalupe wave runner reaches a length of 23 centimeters. It looks very similar to the wave runner ( Oceanodroma leucorhoa ), which also breeds on Guadalupe. But he has lighter under wing-coverts. The beak is also wider and deeper at the base. The top is slate black. The rump is white. The wing covers are grayish brown. The feathers have broad dark tips. The upper tail-coverts and the under wing coverts are white. The tail is forked deep.

Way of life

The Guadalupe wave runner nests mainly in March. However, breeding birds have also been observed in May or June. The clutch, which is often found under pine trees , consists of a single egg. It's white and shows brown or lavender spots. It is placed in a hole in the ground padded with twigs and pine needles. Nothing is known about the way of life and migrations of the Guadalupe wave runner outside of the breeding season.

status

Despite intensive research, there has been no reliable evidence of the species since 1912. Searches in 1922, 1925, and the 1970s failed, as did the first breeding season expedition in 2000. When a team from the San Diego Natural History Museum visited Guadalupe in June 2000, they found only specimens of the wave runner.

The decline of the Guadalupe Waveguide began with the invasion of goats and cats on Guadalupe in the late 19th century. Over 50,000 goats destroyed the vegetation and trampled the eggs. The cats chased the chicks.

literature

  • Dieter Luther (1986): The extinct birds of the world Westarp Sciences, Magdeburg; Spectrum, Heidelberg. ISBN 3-89432-213-6
  • Michael Brooke (2004): Albatrosses and Petrels Across the World . Oxford University Press. ISBN 0-19-850125-0
  • James C. Greenway (1967): Extinct and Vanishing Birds of the World . Dover Publications Inc., New York, ISBN 0-486-21869-4
  • Charles Carboneras (1992): Family Hydrobatidae (Storm-petrels). In: del Hoyo, Josep; Elliott, Andrew and Sargatal, Jordi (Eds.): Handbook of Birds of the World (Volume 1: Ostrich to Ducks): pp. 258-271. Lynx Edicions, Barcelona. ISBN 84-87334-10-5
  • Kaeding, Henry B. (1905): Birds from the West Coast of Lower California and Adjacent Islands. Condor 7 (4): 105-111. PDF full text
  • Thayer, John E. & Bangs, Outram (1908): The Present State of the Ornis of Guadaloupe Island. Condor 10 (3): 101-106. doi : 10.2307 / 1360977 PDF full text
  • Townsend, Charles Haskins (1923): Birds collected in Lower California. Bulletin of the American Museum of Natural History 48: 1-25. PDF full text

Web links