The Siberian Flying Squirrel (Pteromys volans) is an Old World flying squirrel with a range from western Finland and the Baltic states to the Pacific coast. It is the only species of flying squirrel found in Europe, and is considered vulnerable within the European union. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anemones) Placozoa (trichoplax) Subregnum Bilateria (bilateral symmetry) Acoelomorpha (basal) Orthonectida (parasitic to flatworms, echinoderms, etc. ... Typical Classes Subphylum Urochordata - Tunicatas Ascidiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... Orders Subclass Multituberculata (extinct) Plagiaulacida Cimolodonta Subclass Palaeoryctoides (extinct) Subclass Triconodonta (extinct) Subclass Eutheria (includes extinct ancestors)/Placentalia (excludes extinct ancestors) Afrosoricida Artiodactyla Carnivora Cetacea Chiroptera Cimolesta (extinct) Creodonta (extinct) Condylarthra (extinct) Dermoptera Desmostylia (extinct) Embrithopoda (extinct) Hyracoidea Insectivora Lagomorpha Litopterna (extinct) Macroscelidea Mesonychia (extinct) Notoungulata (extinct) Perissodactyla Pholidota Plesiadapiformes... Families See Classification Section The order Rodentia is the most numerous of all the branches on the mammal family tree. ... Genera Many: see text. ... Species Pteromys volans Pteromys momonga Commonly referred to as simply the Old World flying squirrels, the genus Pteromys is distributed across temperate Eurasia and Japan. ... In biology, binomial nomenclature is the formal method of naming species. ... Carolus Linnaeus Baba black sheep crowned patani queen Carl Linnaeus, also known after his ennoblement as (help· info), and in English usually under the Latinized name Carolus Linnaeus (May 23, 1707 – January 10, 1778), the name with which his publications were signed, was a Swedish botanist and physician who laid... Baltic states and the Baltic Sea The Baltic states or the Baltic countries is a term which nowadays refers to three countries in Northern Europe: Estonia Latvia Lithuania Prior to World War II, Finland was sometimes considered, particularly by the Soviet Union, a fourth Baltic state. ... For other meanings of Pacific, see Pacific (disambiguation). ... World map showing Europe Europe is conventionally considered one of the seven continents which, in this case, is more a cultural and political distinction than a physiogeographic one. ... The conservation status of a species is an indicator of the likelihood of that species continuing to survive. ...

A female Siberian Flying Squirrel weighs about 150 grams, the males being slightly smaller on average. The body is 13–20 cm long, with a 9–14 cm long flattened tail. The eyes are large and strikingly black. The coat is gray all over, the abdomen being slightly lighter than the back, with a black stripe between the neck and the forelimb. A distinctive feature of flying squirrels is the furry glide membrane or patagium, a flap of skin that stretches between the front and rear legs. By spreading this membrane the flying squirrel may glide from tree to tree across distances of over a hundred meters. The gram or gramme, symbol g, is a unit of mass. ... cm redirects here, alternate uses: cm (disambiguation) A centimetre (symbol cm; American spelling: centimeter) is an SI unit of length. ... In bats, the skin forming the surface of the wing. ...

The diet of a Siberian Flying Squirrel consists of leaves, seeds, buds, sprouts, nuts, berries and occasionally bird eggs and nestlings. When alder and birch catkins are plentiful, the squirrel may store them for the winter in f.ex. an old woodpecker hole. Leaves are an Icelandic five-piece alternative rock band who came to prominence in 2002 with their debut album, Breathe, drawing comparisons to groups such as Coldplay and Doves. ... A seed is the ripened ovule of gymnosperm or angiosperm plants. ... Flower buds have not yet bloomed into a full-size flower. ... Sprouting is the practice of soaking then draining and leaving seeds until they germinate and begin to sprout. ... Look up Nut in Wiktionary, the free dictionary Nut may be: Nut (fruit) , a type of fruit borne by certain flowering plants Nut (hardware), a type of hardware: a small, often hexagonal piece of metal, with a hole with internal screw thread, to be fitted onto a bolt which is... This article is about the fruit. ... Look up egg in Wiktionary, the free dictionary. ... Species About 20-30 species, see text. ... Species Many species; see text and classification Birch is the name of any tree of the genus Betula, in the family Betulaceae, closely related to the beech/oak family, Fagaceae. ... A male catkin on a willow Catkins, or aments, are slim, cylindrical flower clusters, wind-pollinated and without petals, that can be found in many plant families, including Betulaceae, Fagaceae, Moraceae, and Salicaceae. ... Genera Jynx Picumnus Sasia Nesoctites Melanerpes Sphyrapicus Xiphidiopicus Campethera Geocolaptes Dendropicos Dendrocopos Picoides Veniliornis Piculus Colaptes Celeus Dryocopus Campephilus Picus Dinopium Chrysocolaptes Gecinulus Sapheopipo Blythipicus Reinwardtipicus Meiglyptes Hemicircus Mulleripicus Woodpeckers are near passerine birds of the order Piciformes. ...

Siberian Flying Squirrels mate early in the spring. In southern Finland the first mating season begins in late March, with a second mating season occurring in April. After a gestation period of five weeks, the female gives birth to a litter of usually two or three young, each weighing about 5 grams. Siberian Flying Squirrels preferentially build their nest in holes made by woodpeckers, but they may also nest in birdhouses if the size of the entrance is appropriate. The nest consists of a pile of soft materials (preferably soft beard lichen) into which the squirrel burrows. A Siberian Flying Squirrel can live up to about five years. Look up March in Wiktionary, the free dictionary March is the third month of the year in the Gregorian Calendar and one of seven Gregorian months with the length of 31 days. ... Template:AprillCalendar Look up Aprill in Wiktionary, the free dictionary. ... ... Usnea is a common name for several species of lichen that generally grow hanging from tree branches, resembling grey or greenish hair. ...

Siberian Flying Squirrels favor old forests with a mix of conifers and deciduous trees. They are mostly nocturnal, being most active late in the evening, although females with young may also feed during the day. Siberian Flying Squirrels do not hibernate, but in the winter they may sometimes sleep continuously for several days. As shy and nocturnal animals, Siberian Flying Squirrels are seldom seen. The most common sign of their presence are their droppings, which resemble orange-yellow rice grains and are often found beneath or on top of their nest. Orders & Families Cordaitales † Pinales   Pinaceae - Pine family   Araucariaceae - Araucaria family   Podocarpaceae - Yellow-wood family   Sciadopityaceae - Umbrella-pine family   Cupressaceae - Cypress family   Cephalotaxaceae - Plum-yew family   Taxaceae - Yew family Vojnovskyales † Voltziales † The conifers, division Pinophyta, are one of 13 or 14 division level taxa within the Kingdom Plantae. ... Deciduous means temporary or tending to fall off (deriving from the Latin word decidere, to fall off). ... A nocturnal animal is one that sleeps during the day and is active at night - the opposite of the human (diurnal) schedule. ... Hibernation is a state of regulated hypothermia, lasting several days or weeks, that allows animals to conserve energy during the winter. ...

External links

• Bird Box Cam, includes pictures of Siberian Flying Squirrels nesting in a birdhouse in Helsinki.
• Pteromys volans at Animal Diversity Web.
• Images and text in Swedish about Pteromys volans.