Click here to load reader

Clatsop County Mammals: Eight small prey items for larger creatures…

  • View

  • Download

Embed Size (px)


Clatsop County Mammals: Eight small prey items for larger creatures…. Broadway Middle School Life Science 2009-2010. Trowbridge’s Shrew Sorex trowbridgii. pages/5776/5776.ch04.html. Identification: two-colored tail. - PowerPoint PPT Presentation

Text of Clatsop County Mammals: Eight small prey items for larger creatures…

Clatsop County Mammals: Eight small prey items for larger creatures

Clatsop County Mammals:Eight small prey items for larger creaturesBroadway Middle SchoolLife Science 2009-20101Trowbridges ShrewSorex trowbridgiiOrder Insectivora, Family Soricidae For more information about Soricidae: pages/5776/5776.ch04.html Identification: two-colored tail.2Range, Habitat and Diet

Habitat:Open areasWoodlandsForests

Diet: Insects

Most individuals live no longer than 18 months.

3Townsends ChipmunkTamias townsendii

Order Rodentia, Family SciuridaeFor more information about Sciuridae: Identification: Chipmunks have stripes on their face; ground squirrels do not. 4Range, Habitat and Diet, etc.

Habitat:Coniferous forestsBrushDiet: Seeds, flowers & fruitsHabits, breeding:HibernatesOne litter per year,2-6 young 5Douglas Squirrel,Tamiasciurus douglasii Identification:Dark gray on topOrange underneathBlack stripe from elbow to kneePale eye-ring6 Habitat:Coniferous forestsDiet: Seeds of conifers(from the cones)Habits, breeding:Does not hibernate1 to 2 litters per year, 4-6 youngRange, Habitat and Diet, etc.7Northern Flying Squirrel,Glaucomys sabrinus (upper right)Identification: Large eyes, membrane from elbows to knees for gliding8Range, Habitat and Diet, etc. Habitat:Coniferous forestsMixed forestsDiet: LichensFungus (important: Flying Squirrels disperse fungal spores and bacteria in their scat that help fix nitrogen; clearcutting breaks that cycle and makes it difficult for the forest to regenerate)Habits, breeding:NocturnalGlides from treesOne litter per year, 2-5 young9Creeping Vole, Microtus oregoni Identification: Short, bi-colored tail10Range, Habitat and Diet, etc.

Habitat:GrasslandsForestDiet: Herbivore (plants)Habits, breeding:Burrows underground4-5 litters per year,3-4 young 11Townsends Vole,Microtus townsendii

Identification:Dark brown above, gray below; feet dusky; large ears.

Total length: 15-25 cmtail: 5-8 cmmass: 40-100 g, Habitat and Diet, etc.Habitat:Marshes, streams, and wet meadowsDiet: Herbivore (plants)Habits, breeding:Burrows underground, can swimBreeds from early spring through late summer or early fall; several litters of 19 young each; gestation 2124 days

Red-backed Vole Clethrionomys gapperi tail; red back. Total length: 12-16 cmtail: 3-5 cmmass: 16-42 g.Range, Habitat and Diet, etc.Habitat: Forest or meadows in mountains, damp areasDiet: HerbivoreHabits, Reproduction:Sexually mature at 24 months; breeds late winter to late fall; several litters per year of 28 young, with larger litters at higher elevations and latitudes; gestation 1719 days.Red-backed voles can live in the wild to be 20 months. However, most voles only live as long as 12 to 18 months

Deer Mouse, Peromyscus maniculatus Identification:Adults brown on top, white belowJuveniles gray on topBi-colored tailLarge ears

Notes:Most species tested are positive for the Hantavirus.Some Hantavirus strains can kill humans but not all virus strains are harmful to humans.More information on Hantavirus from the Centers for Disease Control: 16

17Range, Habitat and Diet, etc. Habitat:Ubiquitous (present in all habitatseverywhere, all the time)

Diet: Granivore, omnivore, caprophagy

Habits, breeding:Burrows undergroundMany litters per year, 1-11 young (average is 4-6 young)18