Greater prairie-chicken

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Greater prairie-chicken
Tympanuchus cupido -Illinois, USA -male displaying-8 (1).jpg
Male displaying in Illinois, USA
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Galliformes
Family: Phasianidae
Genus: Tympanuchus
Species:
T. cupido
Binomial name
Tympanuchus cupido
Subspecies

T. c. attwateri
T. c. pinnatus
T. c. cupido

Tympanuchus cupido map.svg
Distribution map of the greater prairie-chicken.
Pale and dark green: pre-settlement
Dark green: current year-round
Synonyms

Tetrao cupidoLinnaeus, 1758

The greater prairie-chicken or pinnated grouse (Tympanuchus cupido), sometimes called a boomer, [2] is a large bird in the grouse family. This North American species was once abundant, but has become extremely rare and extirpated over much of its range due to habitat loss. [2] Conservation measures are underway to ensure the sustainability of existing small populations. One of the most famous aspects of these creatures is the mating ritual called booming.

Contents

Description

Adults of both sexes are medium to large chicken-like birds, stocky with round-wings. They have short tails which are typically rounded. Adult males have orange comb-like feathers over their eyes and dark, elongated head feathers that can be raised or lain along neck. They also possess a circular, un-feathered neck patch which can be inflated while displaying; this, like their comb feathers, is also orange. As with many other bird species, the adult females have shorter head feathers and also lack the male's yellow comb and orange neck patch. Adults are about 43 cm (17 in) long, and weigh between 700–1,200 g (25–42 oz). [3] The greater prairie-chicken has a wingspan range of 69.5–72.5 cm (27.4–28.5 in). [4]

Subspecies

There are three subspecies;

Population and habitat

The greater prairie-chicken prefers undisturbed prairie and was originally found in tallgrass prairies. It can tolerate agricultural land mixed with prairie, but sparser population density is found in areas that are more agricultural. Its diet consists primarily of seeds and fruit, but during the summer it also eats green plants and insects such as grasshoppers, crickets, and beetles. [5] This species was once widespread all across the oak savanna and tall grass prairie ecosystem.

Conservation

The greater prairie-chicken was almost extinct in the 1930s due to hunting pressure and habitat loss. In Illinois alone, in the 1800s the prairie-chicken numbered in the millions. It was a popular game bird, and like many prairie birds, which have also suffered massive habitat loss, it is now on the verge of extinction, with the wild bird population at around 200 in Illinois in 2019. It now only lives on small parcels of managed prairie land. [6] Throughout North America, it is thought that their current population has declined severely, to approximately 500,000 individuals.[ citation needed ] In May 2000, the Canadian Species at Risk Act listed the greater prairie-chicken as extirpated in its Canadian range (Alberta, Saskatchewan, Manitoba, Ontario). [7] It was again confirmed by the Committee on the Status of Endangered Wildlife in Canada in November 2009. [8] Nonetheless, sightings and encounters continue to occur in the south-central regions of Alberta and Saskatchewan, along with southern Ontario, where sightings are extremely rare. [9]

In states such as Iowa and Missouri that once had thriving prairie-chicken populations (estimated to be hundreds of thousands [10] ), total numbers have dropped to about 500. However, the Missouri Department of Conservation has started a program to import prairie-chickens from Kansas and Nebraska in the hopes that they will be able to repopulate the state and increase that number to 3,000.

Central Wisconsin is home to approximately 600 individuals, down from 55,000 when hunting was prohibited in 1954.[ citation needed ] Though this area was predominately spruce and tamarack marsh before European settlement, early pioneers drained the marshes and attempted to farm the poor soil. As the prairies to the south and west were lost to agriculture and development, and the southern half of Wisconsin was logged, the prairies spread northward into the abandoned farmland. Today, over 30,000 acres are managed by the Wisconsin Department of Natural Resources as greater prairie-chicken habitat. Birdwatchers travel from around the world to visit Wisconsin in April for the Central Wisconsin Prairie Chicken Festival, started in 2006 by Golden Sands Resource Conservation & Development Council, Inc.

Threats

Habitat loss is the greatest historical threat to prairie-chicken populations. More than 95% of all tallgrass prairie in the United States has been converted to cropland. The conversion of native prairie to cropland is very detrimental to these birds. It was found in a radio telemetry study conducted by Kansas State University that "most prairie-chicken hens avoided nesting or rearing their broods within a quarter-mile of power lines and within a third-mile of improved roads." (Kansas Department of Wildlife and Parks) It was also found that the prairie-chickens avoided communication towers and rural farms.

Studies have found mesopredators such as striped skunks, raccoons, and opossums significantly increase egg mortality; experimental removal of these predators increased nesting success from 33% to 82%. [11] Loss of apex predators such as bears, wolves, and mountain lions results in increased populations of these mesopredators, and therefore reduces populations of prairie-chickens, an example of a top-down trophic cascade. Non-native common pheasants also reduce prairie-chicken reproduction through nest parasitism.

The small size of some isolated prairie-chicken populations in the Eastern portion of the range resulted in a population bottleneck, which reduced the genetic diversity and ultimately survival of offspring. [12] In Illinois, wildlife management included the "genetic rescue" of small and potentially inbred populations by introducing birds from other areas. [13]

Sexual behavior

Tetrao cupido drawn by T. W. Wood for second edition of Darwin's The Descent of Man, 1874 Descent of Man - Burt 1874 - Fig 39.png
Tetrao cupido drawn by T. W. Wood for second edition of Darwin's The Descent of Man , 1874

Greater prairie-chickens do not migrate. They are territorial birds and often defend their booming grounds. These booming grounds are the area in which they perform their displays in hopes of attracting females. Their displays consist of inflating air sacs located on the side of their neck and snapping their tails. These booming grounds usually have very short or no vegetation. The male prairie-chickens stay on this ground displaying for almost two months. The breeding season usually begins in the United States starting in late March throughout April. During this time the males establish booming sites where they display for the females. The one or two most dominant males can obtain 90% of mating opportunities.[ citation needed ] Due to their now small populations and habitat fragmentation the greater prairie-chickens often undergo inbreeding causing observable inbreeding depression: with fewer offspring and a decreased survival rate within these limited offspring further aiding their population decrease.

After mating has taken place, the females move about one mile from the booming grounds and begin to build their nests. Hens lay between 5 and 17 eggs per clutch and the eggs take between 23 and 24 days to hatch. There are between five and 10 young per brood. [14] The young are raised by the female and fledge in one to four weeks, are completely independent by the tenth to twelfth week, and reach sexual maturity by age one (Ammann, 1957). A study of female greater prairie-chickens in Kansas found that their survival rates were 1.6 to 2.0 times higher during the non-breeding season compared to the breeding season; this was due to heavy predation during nesting and brood-rearing. [15] One problem facing prairie-chickens is competition with the ring-necked pheasants. Pheasants lay their eggs in prairie-chicken nests. The pheasant eggs hatch first; this causes the prairie-chickens to leave the nest thinking that the young have hatched. In reality the eggs did not hatch and the young usually die because the mother is not there to incubate the eggs.

See also

Related Research Articles

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<span class="mw-page-title-main">Common pheasant</span> Species of bird

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<span class="mw-page-title-main">Heath hen</span> Extinct subspecies of bird

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The sharp-tailed grouse, also known as the sharptail or fire grouse, is a medium-sized prairie grouse. One of three species in the genus Tympanuchus, the sharp-tailed grouse is found throughout Alaska, much of Northern and Western Canada, and parts of the Western and Midwestern United States. The sharp-tailed grouse is the provincial bird of the Canadian province of Saskatchewan.

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References

  1. BirdLife International (2020). "Tympanuchus cupido". IUCN Red List of Threatened Species . 2020: e.T22679514A177901079. doi: 10.2305/IUCN.UK.2020-3.RLTS.T22679514A177901079.en . Retrieved 19 November 2021.
  2. 1 2 Friederici, Peter (July 20, 1989). "The Last Prairie Chickens", Chicago Reader. Retrieved August 27, 2014.(Chinese 中文:帕艺明彩大凤凰)
  3. Cornell Lab of Ornithology. "Greater Prairie-Chicken Identification". All About Birds. Cornell University. Retrieved 19 September 2018.
  4. "Greater Prairie-Chicken Identification, All About Birds, Cornell Lab of Ornithology". www.allaboutbirds.org. Retrieved 2020-09-26.
  5. "Greater Prairie-Chicken Life History, All About Birds, Cornell Lab of Ornithology". www.allaboutbirds.org. Retrieved 2020-09-26.
  6. Dampier, Cindy (May 8, 2019). "Stunning Illinois prairie chicken dance could soon be a thing of the past. Only 200 remain, but one family is fighting to save the species". Chicago Tribune. Retrieved 2019-05-11.
  7. "Species - Greater Prairie Chicken". Species at Risk Public Registry. Environment Canada. November 2009. Archived from the original on 2015-05-06. Retrieved 2009-12-03.
  8. "Prairie-chicken wiped out in Canada". CBC News. December 3, 2009. Retrieved 2009-12-03.
  9. "Greater Prairie Chicken". The Canadian Biodiversity Website.
  10. Levitt, Aimee (2011-04-21). "State conservationists scour the Kansas boondocks, aiming to repopulate Missouri with horny prairie chickens". Riverfront Times . Retrieved 2023-09-03.
  11. Lawrence, Jeffrey S.; Silvy, Nova J (1995). "Effect of Predator Control on Reproductive Success and Hen Survival of Attwater's Prairie-chicken". Proc. Annu. Conf. Southeast. Assoc. Fish and Wildl. Agencies. 49: 275–282.
  12. Bellinger, M. Renee; Johnson, Jeff A.; Toepfer, John; Dunn, Peter (2003). "Loss of Genetic Variation in Greater Prairie Chickens Following a Population Bottleneck in Wisconsin, U.S.A". Conservation Biology. 17 (3): 717–724. Bibcode:2003ConBi..17..717B. doi:10.1046/j.1523-1739.2003.01581.x. S2CID   4988537.
  13. Mussmann, S. M.; Douglas, M. R.; Anthonysamy, W. J. B.; Davis, M. A.; Simpson, S. A.; Louis, W.; Douglas, M. E. (2017). "Genetic rescue, the greater prairie chicken and the problem of conservation reliance in the Anthropocene". Royal Society Open Science. 4 (2): 160736. Bibcode:2017RSOS....460736M. doi:10.1098/rsos.160736. PMC   5367285 . PMID   28386428.
  14. "Greater Prairie Chickens". Illinois Natural Resource Information Network. Archived from the original on 2007-06-30.
  15. Augustine JK, Sandercock BK (2011) Demography of female Greater Prairie-Chickens in unfragmented grasslands in Kansas. Avian Conservation and Ecology 6(1):2 ()