Pika Totally Explained

Everything about Pika totally explained

The name pika (archaically spelled pica) is used for any member of the Ochotonidae, a family within the order of lagomorphs, which also includes the Leporidae (rabbits and hares). One genus, Ochotona, is recognised within the family, and it includes 30 species. Pikas are also called rock rabbits or coneys. It is also known as the "whistling hare" due to its high-pitched alarm call when diving into its burrow. The pika may look like a hamster, but is actually a cousin of the rabbit. The name "pika" appears to be derived from the Tungus "piika", or perhaps from the Russian "pikat", to squeak. In the United States the pronunciation of the name is usually altered from /pika/ to /'paɪ·ka/, probably due to the spelling.

Habitat

Pikas are native to cold climates, mostly in Asia, North America and parts of eastern Europe. Most species live on rocky mountain sides, where there are numerous crevices to shelter in, although some also construct crude burrows. A few burrowing species are instead native to open steppe land. In the mountains of Eurasia, pikas often share their burrows with snowfinches, which build their nests there.
In a January 2006 article in the Journal of Biogeography, archeologist Donald Grayson warned that human activity and global climate change appeared to be pushing the American pika population to ever-higher elevations and thus possibly toward extinction. Grayson studied pika habitation over the past 40,000 years in the region between the Sierra Nevada (U.S.) and Rocky Mountains. An earlier Journal of Mammalogy article reached a similar conclusion.

Characteristics

Pikas are small hamster-like animals, with short limbs, rounded ears, and short tails. They are about 18-20 cm in body length, with a tail less than 2 cm long, and weigh between 75 and 290 grams, depending on species. Like rabbits, after eating they initially produce soft green feces, which they eat again to extract further nutrition, before producing the final, solid, fecal pellets.
These animals are herbivores, and feed on a wide variety of plant matter. Because of their native habitat, they primarily eat grasses, sedges, shrub twigs, moss, and lichen. As with other lagomorphs, pikas have gnawing incisors and no canines, although they've fewer premolars than rabbits, giving them a dental formula of:
Rock-dwelling pikas have small litters of less than five young, while the burrowing species tend to give birth to more young, and to breed more frequently, possibly due to a greater availability of resources in their native habitats. The young are born after a gestation period of between 25 and 30 days.

Activity

Pikas are diurnal or crepuscular, with higher altitude species generally being more active during the daytime. They show their peak activity before the winter season. Pikas don't hibernate, so they rely on collected hay for warm bedding and food. Pikas gather fresh grasses and lay them in stacks to dry. Once the grasses dry out, the pikas take this hay back to the burrows for storage. It isn't uncommon for pikas to steal hay from others; the resulting disputes are usually exploited by neighboring predators like ferrets and large birds. Eurasian pikas commonly live in family groups and share duties of gathering food and keeping watch. At least some species are territorial. North American pikas (O. princeps and O. collaris) are, leading solitary lives outside the breeding season.

Species

ORDER LAGOMORPHA
- Family Ochotonidae: pikas
  - Genus Ochotona
    - Subgenus Pika: northern pikas
      Alpine Pika/Altai Pika, Ochotona alpina
      Silver Pika, Ochotona argentata
      Collared Pika, Ochotona collaris
      Hoffmann's Pika, Ochotona hoffmanni
      Northern Pika/Siberian Pika, Ochotona hyperborea
      Pallas's Pika, Ochotona pallasi
      American Pika, Ochotona princeps
      Turuchan Pika, Ochotona turuchanensis
    - Subgenus Ochotona: shrub-steppe pikas
      Gansu Pika/Gray Pika, Ochotona cansus
      Plateau Pika/Black-lipped Pika, Ochotona curzoniae
      Daurian Pika, Ochotona dauurica
      Tsing-ling Pika, Ochotona huangensis
      Nubra Pika, Ochotona nubrica
      Steppe Pika, Ochotona pusilla
      Afghan Pika, Ochotona rufescens
      Moupin Pika, Ochotona thibetana
      Thomas's Pika, Ochotona thomasi
    - Subgenus Conothoa: mountain pikas
      Chinese Red Pika, Ochotona erythrotis
      Forrest's Pika, Ochotona forresti
      Gaoligong Pika, Ochotona gaoligongensis
      Glover's Pika, Ochotona gloveri
      Himalayan Pika, Ochotona himalayana
      Ili Pika, Ochotona iliensis
      Kozlov's Pika, Ochotona koslowi
      Ladak Pika, Ochotona ladacensis
      Large-eared Pika, Ochotona macrotis
      Muli Pika, Ochotona muliensis
      Black Pika, Ochotona nigritia
      Royle's Pika, Ochotona roylei
      Turkestan Red Pika, Ochotona rutila

Further Information

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