pika

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Related to Ochotona: Ochotonidae, Whistling hare

pika

(pī`kə), short-haired mammal related to rabbitsrabbit,
name for herbivorous mammals of the family Leporidae, which also includes the hare and the pika. Rabbits and hares have large front teeth, short tails, and large hind legs and feet adapted for running or jumping.
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 and hareshare,
name for certain herbivorous mammals of the family Leporidae, which also includes the rabbit and pika. The name is applied especially to species of the genus Lepus, sometimes called the true hares.
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, also called mouse hare and rock rabbit. Pikas live above the timber line in the mountains of N Asia and W North America. The pika differs from the rabbit in that its body is smaller and the ears on its blunt head are shorter; also unlike the rabbit, the fore and hind limbs are about equal in length. The pika moves with a scampering gait. Its fur varies from red to gray and covers the soles of its feet. Pikas generally shelter in communities beneath rocks, although some Asian species burrow. Their diet consists primarily of green plants. Because food is difficult to obtain in winter in the harsh tundra environment, pikas cut, sun-dry, and store vegetation for winter use. Pikas are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Mammalia, order Lagomorpha, family Ochotonidae.

pika

[′pī·kə]
(vertebrate zoology)
Any member of the family Ochotonidae, which includes 14 species of lagomorphs resembling rabbits but having a vestigial tail and short, rounded ears.
References in periodicals archive ?
Two pika species, the American pika, Ochotona princeps (Richardson, 1828), and collared pika, O.
Smith, "Keystone status of plateau pikas (Ochotona curzoniae): effect of control on biodiversity of native birds," Biodiversity and Conservation, vol.
Cottontail rabbits (Sylvilagus) and ground squirrels (Spermophilus) are folivores (leaf-eaters), and the diet of the pikas (Ochotona) consists mainly of fruit, and seeds.
Seasonal changes in activity patterns and the adaptive value of haying in pikas (Ochotona princeps).
As Mead and Mead (1989) pointed out, however, Pleistocene Dicrostonyx may only indicate boreal conditions and not necessarily tundra, just as Pleistocene Ochotona may indicate boreal conditions and not necessarily talus slopes (Mead 1987; although see also Hafner 1993).
Revised parameter estimates are obtained for two species living in well-studied metapopulations: the American pika (Ochotona princeps) at Bodie, California, and the false heath fritillary butterfly (Melitaea diamina) in the Tampere region in Finland.
We studied the burrow architecture (length, internal dimensions, fractal dimension of tunnel systems, number of nesting chambers and surface holes) by excavating the tunnels of 24 burrow systems of the plateau pika (Ochotona curzoniae).
Also collared pikas Ochotona collaris forage farther from the talus when pregnant (Holmes 1991), and bighorn sheep Ovis canadensis trade safety for access to more nutritious food during the last month of pregnancy (Berger 1991).
Food caching is a common behaviour for many mammals living in the North, including coyotes (Canis latrans: O'Donoghue et al., 1998), red squirrels (Tamiasciurus hudsonicus; Hurly and Robertson, 1987), pikas (Ochotona collaris; MacDonald and Jones, 1987), beavers (Castor canadensis; Marchand, 1996), voles (Microtus and Clethrionomys spp.; Vander Wall, 1990), and arctic ground squirrels (Buck and Barnes, 1999).
Disparate determinants of summer and winter diet selection of a generalist herbivore, Ochotona princeps.
The wild fauna includes the markhor (Capra falconeri), the collared pika (Ochotona rufescens), the migratory hamster (Cricetulus migratorius), the stone marten (Martes foina), the forest dormouse (Dryomys nitedula), Persian jird (Meriones persicus) and the mouse-like hamster (Calomyscus bailwardi).