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Petrel

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Title: Petrel  
Author: World Heritage Encyclopedia
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Subject: Procellariiformes, Seabird, Spectacled petrel, Pelagornithidae, Burevestnik
Collection: Petrels, Procellariiformes, Seabirds
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Petrel

Petrels are tube-nosed seabirds in the bird order Procellariiformes. The common name does not indicate relationship beyond that point, as "petrels" occur in three of the four families within that group (except the albatross family, Diomedeidae). Having a fossil record that was assumed to extend back at least 60 million years, the Procellariiformes was long considered to be among the older bird groupings, other than the ratites, with presumably distant ties to penguins and loons. However, recent research and fossil finds such as Vegavis show that the Galliformes (pheasants, grouse and relatives), and Anseriformes (ducks, geese) are still not fully resolved. An old world petrel has been found in Biarritz. Its name is Biarritz rock petrel.

All the members of the order are exclusively pelagic in distribution — returning to land only to breed.

The family Procellariidae is the main radiation of medium-sized true petrels, characterised by united nostrils with medium septum, and a long outer functional primary. It is dominant in the Southern Oceans, but not so in the Northern Hemisphere.

It includes a number of petrel groups, the relationships between which have finally been resolved to satisfaction.[1][2][3][4]

  • The fulmarine petrels: seven species of surface predators and filter feeders, breed in high latitudes but migrate along cool currents to the north. All but Fulmarus are essentially confined to the south, Fulmarus apparently colonised the Northern Hemisphere during the Early Miocene.
  • The prions: A specialised group of a few very numerous species, all southern. They have a small, fulmar-like form and mostly filter-feed on zooplankton.
  • The procellariine petrels, larger or mid-sized species feeding on fish and molluscs which are fairly close to the prions:
  • The gadfly petrels: These are a considerable number of agile short-billed petrels in the genus Pterodroma which include the endangered Bermuda petrel or cahow and a considerable number of forms rendered extinct by human activity.

The family Hydrobatidae is the storm petrels, small pelagic petrels with a fluttering flight which often follow ships.

The family Pelecanoididae is the four species of diving petrels, genus Pelacanoides. These are auk-like small petrels of the southern oceans.

The word "petrel" comes from the Latin name for the Christian Saint Peter, and refers to the habits of certain species to hover just above the ocean waves, with their feet barely touching the water, thus giving an appearance of walking on water, as St. Peter is said to have done.

See also

References

  1. ^ Austin, Jeremy J. (1996). "Molecular Phylogenetics of Puffinus Shearwaters: Preliminary Evidence from Mitochondrial Cytochrome b Gene Sequences". Molecular Phylogenetics and Evolution 6 (1): 77–88.  
  2. ^ Bretagnolle, V., Attié, C., Pasquet, E. (1998). (Procellariidae)"Bulweria and Pseudobulweria evidence for validity and phylogenetic relationships of B"Cytochrome- (PDF). Auk. 115(1: 188–195.  
  3. ^ Nunn, Gary B. & Stanley, Scott E. (1998). Evolution in Tube-Nosed Seabirds"b"Body Size Effects and Rates of Cytochrome (PDF). Molecular Biology and Evolution 15 (10): 1360–1371.   Corrigendum
  4. ^ Brooke, M. (2004): Albatrosses and Petrels Across the World. Oxford University Press, Oxford, UK. ISBN 0-19-850125-0

External links

  • The dictionary definition of petrel at Wiktionary
  • Petrel and shearwater videos on the Internet Bird Collection
  • Agreement on the Conservation of Albatrosses and Petrels (ACAP)
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