鸟类百科大全 > 鸊鷉目 (Podicipediformes) > 鸊鷉科 (Podicipedidae) > 巨鸊鷉属 (Podilymbus)

Pied-billed Grebe

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Scientific name: Podilymbus podiceps

Chinese name: 斑嘴巨鸊鷉

Scientific classification

Pied-billed Grebe
Pied-billed Grebe

The Pied-billed Grebe (Podilymbus podiceps) is a species of the grebe family of water birds. Since the Atitlán Grebe (Podilymbus gigas) has become extinct, it is the sole extant member of the genus Podilymbus. The Pied-billed Grebe is primarily found in ponds throughout the Americas. Other names of this grebe include American dabchick, dabchick, Carolina grebe, devil-diver, dive-dapper, dipper, hell-diver, pied-billed dabchick, thick-billed grebe, and water witch.

Species: Podilymbus podiceps
Genus: Podilymbus
Family: Podicipedidae
Order: Podicipediformes
English: Pied-billed Grebe
中文学名: 斑嘴巨鸊鷉
中文属名: 巨鸊鷉属
中文科名: 鸊鷉科
中文目名: 鸊鷉目
IUCN Red List: IUCN Red List
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Contents

Taxonomy and name

The Pied-billed Grebe was described by Carl Linnaeus in the 10th edition of his Systema Naturae in 1758 as Colymbus podiceps. The binomial name is derived from Latin Podilymbus, a contraction of podicipes ("feet at the buttocks", from podici-, "rump-" + pes, "foot")—the origin of the name of the grebe order—and Ancient Greek kolymbos, "diver", and podiceps, "rump-headed", from podici- + New Latin ceps.

Outside its own genus, the closest relatives of the Pied-billed Grebe are the small grebes of the genus Tachybaptus.

Description

Pied-billed Grebes are small, stocky, and short-necked. They are 31–38 centimeters (12–15 in) in length, with a wingspan of 45–62 cm (18–24 in) and weigh 253–568 grams (8.9–20.0 oz). They are mainly brown, with a darker crown and back. Their brown color serves as camouflage in the marshes they live in. They do not have white under their wings when flying, like other grebes. Their undertail is white and they have a short, blunt chicken-like bill that is a light grey color, which in summer is encircled by a broad black band (hence the name). In the summer, its throat is black. There is no sexual dimorphism. Juveniles have black and white stripes and look more like winter adults. This grebe does not have webbed feet. Its toes have lobes that come out of the side of each toe. These lobes allow for easy paddling. When flying, the feet appear behind the body due to the feets placement in the far back of the body.

It may be confused with the Least Grebe, although that species is smaller and has a thinner bill.

Vocalization

Its call is unique, loud and sounds like a "whooping kuk-kuk-cow-cow-cow-cowp-cowp." Its call is similar to the Yellow-billed Cuckoo.

Distribution and habitat

They are most commonly found throughout North America, Central America and South America year round. During the summer breeding season, they are most prevalent in central, northern and northeastern Canada. If they live in an area where the water freezes in the winter they will migrate. Migrating birds generally meet with year round birds in September and October. They migrate at night. Most migratory birds leave in March or April. They make occasional appearances in Europe and Hawaii. In the United Kingdom, Pied-billed Grebe visits have numbered 37 sightings as of 2007, appearing generally in October to January. One bird in England bred with a Little Grebe, producing hybrid young. It is the only grebe on record to have visited the Galapagos Islands.

Pied-billed Grebes are found in freshwater wetlands with emergent vegetation, such as cattails. They are occasionally found in salt water. When breeding they are found in emergent vegetation near open water, and in the winter they are primarily found in open water due to the lack of nests to maintain. They may live near rivers, but prefer still water. They may be found in higher elevations when migrating. They will breed in restored and man-made wetlands.

Pied-billed Grebes live approximately 10–12 years.

Behaviour

Pied-billed Grebe
Pied-billed Grebe
Young chick swimming on Lake Washington

Pied-billed Grebes rarely fly. They make a slow dive frequently, especially when in danger, diving to about 20 feet or less. They dive for about 30 seconds and may move to a more secluded area of the water, allowing only the head to be visible to watch the danger dissipate. This frequency in diving has earned them the description of being reclusive or shy in nature. It hass also earned them nicknames like "hell-diver." They rarely spend time in flocks. Their courtship include calling and sometimes duets. Males will show territorial behaviour if another male is at the edge of his territory. They face each other and then turn their heads and bills up. Then they turn away and start calling. Then they turn back around to look at one another.

Breeding

The Pied-billed Grebe breeds in south-central Canada, throughout the United States, Central America, the Caribbean, and temperate South America. These grebes may lay up to two sets of eggs a year. Their nests sit on top of the water. Their eggs sitting in vegetation that resides in the water. Grebes lay between three and ten bluish white smooth elliptical eggs with the female starting the incubation process. They are incubated for around 23 days by both parents with the female takes over incubation duties towards the end of that time period. They will cover the nest with nesting material if they have to leave it for an extended period of time.

Young grebes may leave the nest within one day of hatching. They are downy at birth. Yellow skin is seen between the lore and top of the head. They do not swim well and stay out of the water. They sleep on their parents' backs. Within four weeks they start swimming. When alerted they will climb on the back of a parent grebe and eventually mature to dive under the water like their parents. Both parents share the role of raising the young – both feeding and carrying them on their backs. Sometimes the parents will dive underwater to get food with the chicks on their backs.

Diet

Pied-billed Grebe
Pied-billed Grebe
An adult with two juveniles feeding on a crawfish.

Pied-billed Grebes feed mainly on aquatic invertebrates, and also on small fish and amphibians (frogs, tadpoles). They dive to obtain food. Their bills allow them to crush crustaceans, like crawfish. They may also eat plants. They have been shown to eat their own feathers, like other grebes, to aid in digestion (prevent injury from small bones). They will also feed their feathers to their young.

Threats

They are extremely sensitive to disturbances, especially by humans. While breeding, if scared, adults may abandon their nests without protecting the eggs. The waves from boats can destroy the nests and their sounds easily fright the birds.

In culture

Pied-billed Grebe feathers are thick and soft. Their feathers used to be used as decorations on hats and earmuffs and they were hunted in the eastern United States, in the 19th-century.

Status

The grebes are declining in New England. The reasons are unknown. The states of Connecticut and New Hampshire have declared the Pied-billed Grebe as endangered. In New Jersey and Massachusetts, they have been declared threatened. In Vermont they are of "special concern." In Rhode Island they are locally extinct. They are also endangered in Illinois.

Habitat loss is the grebe's biggest threat. The draining, filling, and general destruction of wetlands causes a loss in their breeding habitats. However, they are still common in the majority of their distribution areas.

References

  1. BirdLife International (2012). "Podilymbus podiceps". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. http://www.iucnredlist.org/apps/redlist/details/106003633. Retrieved 16 July 2012.
  2. ^ abcdefghijklmn "Pied-billed Grebe". Bird Guide. The Cornell Lab of Ornithology. http://www.allaboutbirds.org/guide/Pied-billed_Grebe/id. Retrieved 12 August 2012.
  3. ^ ab "Pied-billed Grebe – Podilymbus podiceps". NatureWorks. http://wwx.inhs.illinois.edu/collections/birds/ilbirds/52/. Retrieved 12 August 2012.
  4. ^ abc "Pied-billed grebe". Birds. Illinois Natural History Survey. http://www.inhs.illinois.edu/animals_plants/birds/ifwis/birds/pied-billed-grebe.html. Retrieved 12 August 2012.
  5. Linnaeus, Carolus (1758) (in Latin). Systema naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata. Stockholm: Laurentius Salvius. p. 136.
  6. Cabard P. and Chauvet B. in Etymologie des noms d'oiseaux (2003) Belin Eveil éditeur, France ISBN 2-7011-3783-7
  7. Christidis, Les; Walter E. Boles (2008). Systematics and Taxonomy of Australian Birds. CSIRO. p. 67. ISBN 0643065113.
  8. ^ ab Muller, M. J., and R. W. Storer. Pied-billed Grebe (Podilymbus podiceps). In The Birds of North America, No. 410 (A. Poole and F. Gill, eds.). Philadelphia, PA: The Birds of North America, Inc., 1999.
  9. ^ abcd "Pied-billed grebe Podilymbus podiceps". USGS. http://www.mbr-pwrc.usgs.gov/id/framlst/i0060id.html. Retrieved 12 August 2012.
  10. ^ abcdef "Pied-billed Grebe, Podilymbus podiceps". State of New Jersey. http://www.nj.gov/dep/fgw/ensp/pdf/end-thrtened/pbgrebe.pdf. Retrieved 12 August 2012.
  11. ^ abcdefghijklm "Pied-billed Grebe". Department of Energy & Environmental Protection. State of Connecticut. http://www.ct.gov/dep/cwp/view.asp?a=2723&q=326056. Retrieved 12 August 2012.
  12. ^ abcde Fisher, Chris C. & Joseph Morlan (1996). Birds of San Francisco and the Bay Area. Auburn: Lone Pine Publishing. p. 19. ISBN 978-1-55105-080-5.
  13. ^ abcdefghijklm "Pied-billed Grebe". Grebes. Seattle Audubon Society. http://birdweb.org/birdweb/bird/pied-billed_grebe. Retrieved 12 August 2012.
  14. "Pied-billed Grebe Podilymbus podiceps". Grebes. British Trust for Ornithology. http://blx1.bto.org/birdfacts/results/bob60.htm. Retrieved 12 August 2012.
  15. Newton, Ian (2008). The Migration Ecology of Birds. London, UK: Academic Press. p. 291. ISBN 978-0-12-517367-4. http://books.google.com/books?id=BndIbshDWTgC&pg=PA291.
  16. Andy Swash; Rob Still (28 February 2006). Birds, Mammals, and Reptiles of the Galapagos Islands: An Identification Guide, 2nd Edition. Yale University Press. p. 58. ISBN 978-0-300-11532-1. http://books.google.com/books?id=9s3p8TfXAq8C&pg=PA58. Retrieved 11 August 2012.
  17. Ehrlich, Paul; David Dobkin, and Darryl Wheye. The Birder's Handbook. New York: Simon and Schuster, 1988.

External links

  • Media related to Podilymbus podiceps at Wikimedia Commons
  • v
  • t
  • e
Grebes (order: Podicipediformes · family: Podicipedidae) Genus Species Tachybaptus
  • Little Grebe
  • Australasian Grebe
  • Madagascar Grebe
  • Alaotra Grebe
  • Least Grebe
Podilymbus
  • Pied-billed Grebe
  • Atitlán Grebe
Rollandia
  • White-tufted Grebe
  • Titicaca Flightless Grebe
Poliocephalus
  • Hoary-headed Grebe
  • New Zealand Dabchick
Podiceps
  • Red-necked Grebe
  • Great Crested Grebe
  • Slavonian Grebe (or Horned Grebe)
  • Black-necked Grebe (or Eared Grebe)
  • Colombian Grebe
  • Great Grebe
  • Silvery Grebe
  • Junin Flightless Grebe
  • Hooded Grebe
Aechmophorus
  • Western Grebe
  • Clark's Grebe

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参考资料

[1].  Pied-billed Grebe, from Wikipedia:  http://en.wikipedia.org/wiki/Pied-billed_Grebe

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