The greater prairie chicken or pinnated grouse (Tympanuchus cupido), sometimes called a boomer, 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. 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.
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 long, and weigh between . The greater prairie-chicken has a wingspan range of .
Subspecies
There are three subspecies; The heath hen, Tympanuchus cupido cupido, which was historically found along the Atlantic coast, is extinct. It was possibly a distinct species; in this case the two other forms would be T. pinnatus pinnatus and T. p. attwateri. Attwater's prairie chicken, T. c. attwateri is endangered and restricted to coastal Texas. The greater prairie chicken, T. c. pinnatus, is now restricted to a small section of its former range.
Population and habitat
Greater prairie chickens prefer undisturbed prairie and were originally found in tallgrass prairies. They can tolerate agricultural land mixed with prairie, but fewer prairie chickens are found in areas that are more agricultural. Their diet consists primarily of seeds and fruit, but during the summer they also eat green plants and insects such as grasshoppers, crickets, and beetles. These birds were 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. They were a popular game bird, and like many prairie birds, which have also suffered massive habitat loss, they are now on the verge of extinction, with the wild bird population at around 200 in Illinois in 2019. They now only live on small parcels of managed prairie land. Throughout North America, it is thought that their current population has declined severely, to approximately 500,000 individuals. In May 2000, the Canadian Species at Risk Act listed the greater prairie chicken as extirpated in its Canadian range (Alberta, Saskatchewan, Manitoba, Ontario). It was again confirmed by the Committee on the Status of Endangered Wildlife in Canada in November 2009. 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.
In states such as Iowa and Missouri that once had thriving prairie chicken populations (estimated to be hundreds of thousands), 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. 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.