field vole造句

• This habitat provides valuable areas for mammals such as bank and field voles, rabbits and foxes.
• Male field voles maintain a territory but females just have a home range which may overlap with that of a neighbour.
• The northern field is damp and has plants typical of periodically waterlogged fields, such as woodmice, field voles and roe deer.
• Areas of ungrazed rough pasture have badgers, and field voles and pygmy shrews are hunted by hen harriers and short-eared owls.
• Female field voles sometimes spontaneously move in the time gap between weaning one litter and producing the next, a phenomenon typical of this species.
• Lemmings, field voles, root voles and northern water voles are most widespread, but their numbers vary a great deal from year to year.
• Field voles are an important part of the diet of barn owls and they are also preyed on by kestrels, other owls, weasels, stoats, foxes and snakes.
• The field vole is a herbivore and feeds on grasses, herbs, root tubers, moss and other vegetation and gnaws bark during the winter ( it does not hibernate ).
• One of the causes of the large population swings that occur in the field vole is the scramble competition which comes into play when the most desirable food plants are less available in mid summer.
• The Manchurian hare, valued for its fur, and some species of rodent such as the rat hamster and the eastern field vole are believed to be peculiar to the North-east forest.
• The Eurasian water shrew has a pair of glands under its jaw which produce venom, and this has been shown to be potent against the field vole ( " Microtus agrestis " ), and lethal at a minimum dose of fifteen milligrams per kilogram body weight.
• In northern Sweden, more than 60 % of the food was made up of microtine rodents, i . e . the Norway lemming ( " Lemmus lemmus " ), the field vole, the European water vole and the grey red-backed vole ( " Myodes rufocanus " ).
• They eat a wide variety of animal and vegetable type-food, like fruit, seeds, grain, mast, berries and leaves as well as a wide range of invertebrates, such as leatherjackets, ant eggs, wireworms, caterpillars, grasshoppers and other insects; with small vertebrates like lizards, field voles, small mammals, and small birds occasionally taken.