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The California Ground Squirrel, Spermophilus beecheyi (referred to in some older sources as Otospermophilus beecheyi or Citellus beecheyi), is a common and easily observed ground squirrel of the western United States and the Baja California peninsula; it is common in Oregon and California and its range has relatively recently extended into Washington. Image File history File linksMetadata Size of this preview: 446 × 600 pixelsFull resolution (976 × 1312 pixel, file size: 639 KB, MIME type: image/jpeg) Spermophilus beecheyi Viewpoint location: Mist Trail, Yosemite National Park Geographic coordinates: 37. ...
The conservation status of a species is an indicator of the likelihood of that species continuing to survive either in the present day or the future. ...
Image File history File links Status_iucn2. ...
Least Concern (LC) is an IUCN category assigned to species or lower taxa which do not qualify for any other category. ...
Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ...
Animalia redirects here. ...
Typical Classes See below Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates. ...
Subclasses Allotheria* Order Multituberculata (extinct) Order Volaticotheria (extinct) Order Palaeoryctoides (extinct) Order Triconodonta (extinct) Order Docodonta (extinct) Prototheria Order Monotremata Theria Infraclass Trituberculata (extinct) Infraclass Marsupialia Infraclass Eutheria The mammals are the class of vertebrate animals characterized by the production of milk in females for the nourishment of young, from...
Suborders Sciuromorpha Castorimorpha Myomorpha Anomaluromorpha Hystricomorpha Rodentia is an order of mammals also known as rodents. ...
Genera Many: see text. ...
Species about 38: see text. ...
In biology, binomial nomenclature is the formal method of naming species. ...
Sir John Richardson (1787 - 1865) was a Scottish naval surgeon, naturalist and arctic explorer. ...
Johann Wolfgang von Goethe 1829 was a common year starting on Thursday (see link for calendar). ...
Genera See entry. ...
Baja California Peninsula (highlighted) The Baja California Peninsula or Lower California is a peninsula in the west of Mexico. ...
Official language(s) None Capital Salem Largest city Portland Area Ranked 9th - Total 98,466 sq mi (255,026 km²) - Width 260 miles (420 km) - Length 360 miles (580 km) - % water 2. ...
Official language(s) English Capital Sacramento Largest city Los Angeles Area Ranked 3rd - Total 158,302 sq mi (410,000 km²) - Width 250 miles (400 km) - Length 770 miles (1,240 km) - % water 4. ...
This article deals with the U.S. state. ...
The squirrel's upperparts are mottled, the fur containing a mixture of gray, light brown and dusky hairs; the underside is lighter, buff or grayish yellow. The fur around the eyes is whitish, while that around the ears is black. Head and body are about 30 cm long and the tail an additional 15 cm. The tail is relatively bushy for a ground squirrel, and at a quick glance the squirrel might be mistaken for a Fox Squirrel. Binomial name Sciurus niger Linnaeus, 1758 The Fox Squirrel (Sciurus niger) is the largest species of tree squirrels native to North America. ...
As is typical for ground squirrels, California Ground Squirrels live in burrows which they excavate themselves. Some burrows are occupied communally. Although they readily become tame in areas used by humans, and quickly learn to take food left or offered by picnickers, they spend most of their time within 25 m of their burrow, and rarely go further than 50 m from it.
 The underside is lighter than the upper parts. California Ground Squirrels are frequently preyed on by rattlesnakes. They are also preyed on by eagles, raccoons, red foxes, badgers, and weasels. Interdisciplinary research at the University of California, Davis since the 1970s has shown that the squirrels use a variety of techniques to reduce rattlesnake predation. Some populations of California Ground Squirrels have varying levels of immunity to rattlesnake venom as adults. Female squirrels with pups also chew on the skins shed by rattlesnakes and then lick themselves and their pups (who are never immune to venom before one month of age) to disguise their scent. Sand-kicking and other forms of harassment provoke the snake to rattle its tail, which allows a squirrel to assess the size and friskiness (dependent on blood temperature) of the snake. Another strategy is for a squirrel to super-heat and swish around its tail. When hunting, rattlesnakes primarily rely on their pit organ, which detects infra-red. The hot-tail-swishing appears to convey the message "I am not a threat, but I am too big and swift-moving for it to be worth trying to hunt me." These two confronational techniques also distract the snake from any nearby squirrel burrows containing pups. Image File history File links Size of this preview: 800 × 600 pixelsFull resolution (800 × 600 pixel, file size: 118 KB, MIME type: image/jpeg) Description Spermophilus beecheyi, California Ground Squirrel. ...
Image File history File links Size of this preview: 800 × 600 pixelsFull resolution (800 × 600 pixel, file size: 118 KB, MIME type: image/jpeg) Description Spermophilus beecheyi, California Ground Squirrel. ...
Species 27 species; see list of rattlesnake species and subspecies. ...
The University of California, Davis, commonly known as UC Davis, is one of the ten campuses of the University of California, and was established as the University Farm in 1905. ...
// Snake venom is a highly modified saliva that is produced by special glands. ...
Image of a small dog taken in mid-infrared (thermal) light (false color) Infrared (IR) radiation is electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation. ...
In the colder parts of their range, California Ground Squirrels hibernate for several months, but where winters are mild some squirrels are active year round. In those parts where the summers are hot they may also estivate for periods of a few days. This article is about the process of hibernation in biology. ...
Estivation or aestivation (from Latin aestas, summer) is a state of dormancy similar to hibernation. ...
California Ground Squirrels are often regarded as a pest in gardens and parks, since they will feed off ornamental plants and trees. Larval form of some beetle is damaging specimen of Sceliphron destillatorius in entomogical collection. ...
References Image File history File links Commons-logo. ...
Wikimedia Commons logo by Reid Beels The Wikimedia Commons (also called Commons or Wikicommons) is a repository of free content images, sound and other multimedia files. ...
The IUCN Red List of Threatened Species (also known as the IUCN Red List and Red Data List), created in 1963, is the worlds most comprehensive inventory of the global conservation status of plant and animal species and can be found here. ...
The World Conservation Union or International Union for the Conservation of Nature and Natural Resources (IUCN) is an international organization dedicated to natural resource conservation. ...
Please note that the ITIS system URL has changed (25 September 2006). ...
March 18 is the 77th day of the year in the Gregorian calendar (78th in leap years). ...
For the Manfred Mann album, see 2006 (album). ...
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