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Overview

Distribution

Range Description

The Thin-billed Prion breeds the Crozet Islands and the Kerguelen Islands (French Southern Territories), the Falkland islands (Islas Malvinas) and Noir Island, Chile. Outside the breeding season it can be found over much of the Southern Ocean, including the coasts of South Africa, Australia and South America as far north as Uraguay and southern Peru1.

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Range

Crozet, Kerguelen and Falkland islands; Noir I. (off s Chile).

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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This marine species can usually be found over pelagic waters but will feed inshore or in shallow offshore waters during the breeding season. It feeds mostly on crustaceans with a heavy dependance on amphipods (particularly Themisto gaudichaudii). It can also take small fish and squid. It catches prey mainly by surface-seizing, dipping and pattering at night. Breeding starts in October in loose colonies in costal areas with soft or stony soil and low vegetation. It nests in burrows (del Hoyo et al. 1992).


Systems
  • Terrestrial
  • Marine
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Depth range based on 128 specimens in 1 taxon.
Water temperature and chemistry ranges based on 125 samples.

Environmental ranges
  Depth range (m): 0 - 0
  Temperature range (°C): -0.938 - 12.819
  Nitrate (umol/L): 1.740 - 27.513
  Salinity (PPS): 33.715 - 34.695
  Oxygen (ml/l): 6.023 - 8.053
  Phosphate (umol/l): 0.467 - 1.896
  Silicate (umol/l): 2.050 - 52.680

Graphical representation

Temperature range (°C): -0.938 - 12.819

Nitrate (umol/L): 1.740 - 27.513

Salinity (PPS): 33.715 - 34.695

Oxygen (ml/l): 6.023 - 8.053

Phosphate (umol/l): 0.467 - 1.896

Silicate (umol/l): 2.050 - 52.680
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Life History and Behavior

Behavior

Breeding Category

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  • Woehler E.J. (compiler) 2006. Species list prepared for SCAR/IUCN/BirdLife International Workshop on Antarctic Regional Seabird Populations, March 2005, Cambridge, UK.
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Source: World Register of Marine Species

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Pachyptila belcheri

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 3
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2012

Assessor/s
BirdLife International

Reviewer/s
Butchart, S. & Symes, A.

Contributor/s

Justification
This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is extremely large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
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Population

Population
Brooke (2004) estimated the global population to number at least 7,000,000 individuals.

Population Trend
Stable
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Relevance to Humans and Ecosystems

Risks

IUCN Red List Category

Least Concern
  • Woehler E.J. (compiler) 2006. Species list prepared for SCAR/IUCN/BirdLife International Workshop on Antarctic Regional Seabird Populations, March 2005, Cambridge, UK.
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Wikipedia

Slender-billed Prion

The Slender-billed Prion or Thin-billed Prion, Pachyptila belcheri, is a species of seabird in the Procellariidae family. It is found in the southern oceans.

Taxonomy[edit]

The Slender-billed Prion is a member of the Pachyptila genus and along with the Blue Petrel make up the prions. They are then members of the Procellariiformes order, and they share certain identifying features. First, they have nasal passages that attach to the upper bill called naricorns. Although the nostrils on the Prion are on top of the upper bill. The bills of Procellariiformes are also unique in that they are split into between 7 and 9 horny plates. They produce a stomach oil made up of wax esters and triglycerides that is stored in the proventriculus. This is used against predators as well as an energy rich food source for chicks and for the adults during their long flights.[2] Finally, they also have a salt gland that is situated above the nasal passage and helps desalinate their bodies, due to the high amount of ocean water that they imbibe. It excretes a high saline solution from their nose.[3]

Etymology[edit]

Pachyptila, the word, comes from the Greek words pakhus and ptilon. Pakhus means thick or stout and ptilon means a feather. Also from the Greek language, Prion comes from the word priōn meaning a saw, which is in reference to its serrated edges of its bill.[4]

Description[edit]

Like all prions, they are blue-grey above and white below with a dark "M" on their back to their wingtips. They have a white eyebrow and a dark line extending from below the eye almost to the neck. Their tail is wedge-shaped and grey with a black tip, their bill is blue-grey, and their feet are pale blue.[5]

Behavior[edit]

Reproduction[edit]

They are annual breeders and will lay one egg. Both parents will then incubate the egg and care for the young until they fledge.[6]

Feeding[edit]

Like all prions, the Slender-billed eat zooplankton, by filtering it through their bill.[6]

Range and habitat[edit]

The Slender-billed Prion spends all of his non-breeding time over ocean water in the southern oceans. When breeding, they will do so on the Crozet Islands, the Kerguelen Islands, the Falkland islands and Noir Island off the coast of southern Chile.[7]

Conservation[edit]

This species has a very large range and their estimated population is 7,000,000, allowing the IUCN to classify them as Least Concern.[1][8]

Footnotes[edit]

  1. ^ a b BirdLife International (2012). "Pachyptila belcheri". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 26 November 2013. 
  2. ^ Double, M. C. (2003)
  3. ^ Ehrlich, Paul R. (1988)
  4. ^ Gotch, A. T. (1995)
  5. ^ ZipCode Zoo (19 Jun 2009)
  6. ^ a b Maynard, B. J. (2003)
  7. ^ Clements, James (2007)
  8. ^ BirdLife International (2009)

References[edit]

  • BirdLife International (2009). "Thin-billed Prion Pachyptila belcheri - BirdLife Species Factsheet". Data Zone. Retrieved 23 Jul 2009. 
  • Clements, James (2007). The Clements Checklist of the Birds of the World (6 ed.). Ithaca, NY: Cornell University Press. ISBN 978-0-8014-4501-9. 
  • Double, M. C. (2003). "Procellariiformes (Tubenosed Seabirds)". In Hutchins, Michael; Jackson, Jerome A.; Bock, Walter J. et al. Grzimek's Animal Life Encyclopedia. 8 Birds I Tinamous and Ratites to Hoatzins. Joseph E. Trumpey, Chief Scientific Illustrator (2 ed.). Farmington Hills, MI: Gale Group. pp. 107–111. ISBN 0-7876-5784-0. 
  • Ehrlich, Paul R.; Dobkin, David, S.; Wheye, Darryl (1988). The Birders Handbook (First ed.). New York, NY: Simon & Schuster. pp. 29–31. ISBN 0-671-65989-8. 
  • Gotch, A. F. (1995) [1979]. "Albatrosses, Fulmars, Shearwaters, and Petrels". Latin Names Explained A Guide to the Scientific Classifications of Reptiles, Birds & Mammals. New York, NY: Facts on File. p. 192. ISBN 0-8160-3377-3. 
  • Maynard, B. J. (2003). "Shearwaters, petrels, and fulmars (Procellariidae)". In Hutchins, Michael; Jackson, Jerome A.; Bock, Walter J. et al. Grzimek's Animal Life Encyclopedia. 8 Birds I Tinamous and Ratites to Hoatzins. Joseph E. Trumpey, Chief Scientific Illustrator (2 ed.). Farmington Hills, MI: Gale Group. pp. 123–133. ISBN 0-7876-5784-0. 
  • ZipCode Zoo (19 Jun 2009). "Pachyptila belcheri (Slender-Billed Prion)". BayScience Foundation. Retrieved 23 Jul 2009. 
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