The cricetidae family.

The field vole.

Overgrown fields and places with long , rough grass are typical homes for the field vole, which also likes damp, tussocky grass. The field vole is aggressive and noisy, uttering  loud squeaks and angry chattering noises as they defend their small territories, driving out other voles. Each vole will make runways among the grass stems, usually on the tussock grass where it nests. The field vole feeds frequently, by day or night. Field voles are taken by a host of predators, but are prolific breeders. Populations in a favourable habitat often increase rapidly to number in their thousands- a vole plague. The plague is followed by a rapid decline, probably due to less successful breeding because of overcrowding and heightened aggression. These high and low populations occur at intervals of from three to five years, often accompanied by similar fluctuations in predator populations. Field voles are very abundant for a few years in young forestry plantations, but as the trees grow the cast a dense shade causing the grass to die, forcing the voles to go elsewhere. Some will survive on the grassy fringes, from where they can quickly recolonise grassy areas that develop once trees are felled. The normal life span of a field vole is about a year. Field voles are the main food for barn owls, forming around 90 per cent of their diet. Other animals that take the voles include kestrels, foxes, stoats, weasels and snakes. Its yellowy-brown colouring helps to distinguish the field vole from the red-brown bank vole, with a blunt nose and short ears, but it has a shorter, pinker tail and is also known as the short-tailed vole. The field vole has about a four inch head and body with a tail that is about one and a half inches in length. Adult field voles are very belligerent. They compete for territory and are quick to fight in its defence. The field vole is widespread in grassland and hedgerows in both lowlands and uplands, but none are found in Ireland. The main food of the field vole is grass stems, especially the lower stems  which are very succulent, they will also eat bulbs, roots and tree bark at low level. Four or five litters of from four to six young are reared between March and December. By ten days old they are furred and by sixteen days old they are full weaned. At six weeks old, young field voles are ready to mate. Field voles often nest under logs and other objects lying in the dry grass.

Habitats.

Part fourteen mammals of the mountain sides.

Britain`s mountains are not very high-only one, Ben Nevis is, above 4,000 ft (1,200m)- but they are bleak places for warm blooded creatures to live, especially in winter. For roughly every 500ft (150m) of height above sea level, it gets almost two degrees colder. Rain and mist as well as stronger winds also add to the chill. Trees rarely grow on high, windswept uplands, so there is little shelter. Consequently, few mammals live on the exposed high ground. Although they forage on the heights in summer, red deer and, to a lesser degree, mountain hares move to lower ground for the winter. Small mammals, such as field voles that live amid the upland grass, do not make long migrations. Although they lose a lot of body heat because they have a large surface area of skin in relation to their bulk, they can find shelter in burrows or among thickets of heather or bilberry. Despite the cold, small spiders and insects are surprisingly numerous amid upland vegetation, and provide food for pygmy shrews. Stoats thrive on field voles but will also take meadow pipits and other upland birds. Crows and foxes search the mountain- sides for carrion such as dead hares and sheep. Small herds of feral goats may be seen in a few mountainous areas. They vary widely in colour, ranging from white to piebald, skewbald, dark brown or black. Young goats are not likely to be seen before April. In their winter pelage, mountain hares look like snow against the dark heather. They show up only when they move. On upland slopes they take the place of rabbits and brown hares. Many upland areas now have commercial plantations of dense conifers(some wildlife trusts are now taking some of these out). They rob mountain hares of their living space, but may provide homes for pine martins. Red deer move down the valley during winter, returning in spring. Stoats have great camouflage in winter because of their winter pelage. It also helps to preserve body heat, because white fur radiates less than dark fur. Where there are meadow pipits there may also be pygmy shrews. Both feed on tiny insects among the stones and heather. Pygmy shrews remain well hidden but nay be heard squeaking.

Things to look out for in December.

We are now moving towards the winter solstice at which all of nature will be re-born, the first signs of this will be appearing quite soon. Snow has taken up a lot of the headlines, Worcestershire has had quite a lot of snow over the last week. Field and bank voles will be punching up through the snow to make air holes. They will find plenty of shoots and grass under the snow.  They will spend long periods looking for their food. Stoats and weasels may be stumbled across while they are out hunting for wood mice or rabbits. Brown hare tracks may be seen as well as they move through the snow. Their will be two smaller fore prints followed by two larger hind prints. This pattern is caused by the hares as they run through the snow. As a hare is digging through the thick snow to find shoots of grass under it, it will be listening out with its large ears for anything that is approaching it. You will be able to get quite close to a brown hare before it bolts aware from the area that it has been digging. For the brown hare it is much a challenge to survive as well as eluding predators during any month especially the cold ones. Foxes start mating from December until February, the vixen will only be receptive for between two and three days. Because of this the dog fox will not leave the vixen. Foxes become vociferous as the breeding seasons approaches. The "wow-wowing" bark and the blood curdling scream, produced mainly by the vixen, are their way of getting to know who is in their neighbourhood. Their will be lots of redwings,fieldfares and blackbirds around the red berries of holly during this month as they all try to seek out food. Look out for mistletoe on old oak trees as you are walking in the countryside. Rooks and jackdaws will be busy in their rookery as they start to prepare their nests for the forthcoming breeding season. The noise that comes from their rookery is for me one of the most enjoyable noises in the countryside. Blackcaps may be seen coming into your garden during the long winter days to seek out food. My mum has a single blackcap male that will stay in her garden until almost spring and then come back next winter. Yellowhammers and corn buntings may be seen concentrated together looking for food in large flocks. Their bodies resemble larger sparrows, because of this the word bunting means plump or stocky. The yellowhamer is a canary lemon yellow colour, but during winter this is not quite as striking. The corn bunting is a larger bird than the yellowhammer but hasn`t got quite as striking colours, they are normally a light brown colour with a pale chest. Rough grassland and arable land are favoured sites for these birds. Blue tits,great tits and chaffinches may be seen in mixed flocks. Small tortoiseshell  and peacock butterflies have now found somewhere to hibernate. Queen wasps will also be looking for somewhere to hibernate. After mating in the summer they will look for old wood mice nests or our house for favourable sites. Centipedes and millipedes are still wriggling around in the depths of the soil in our gardens. Scarlet elf-cup fungus,dead man fingers and jews ear fungus are three fungus's to look our for while taking a stroll through one of our deciduous woodland during December.

Things to look out for in November.

The weather is now becoming much more Autumnal, The winds are becoming stronger, with all of the leaves that all have fallen to the ground blowing around. Most of the leaves from the deciduous trees have now fallen. Red wings and fieldfares have now made the long journey from Scandinavia to winter in Britain. They will be seen amongst hawthorn and apple trees, Finding the remaining hawthorn berries and apples. Their have been quite a few mentions of waxwings around Worcestershire. This bird is also a migrant that Winters in Britain. The fallow,sika and red deer will be finishing their rut by now. After the ruts the males, who don`t eat during the rut will feed well getting ready for the onset of winter. The females will also stay together during winter. The females will give birth during may or June of the following year. Chaffiinches and pied wagtails,linnets,bramblings and greenfinches may be seen in mixed flock species( i will be talking about this in a later blog). They are searching for food, which could be any leftover seeds that are still  in the hedgerow or even any late surviving nuts that may still be on the ground. Blue,coal and great tits will be seen on the feeders as they themselves are eating well,getting ready for the cold months ahead as well.  Seven spotted ladybirds will be attempting to enter our houses as they seek somewhere to hibernate over winter. Late migrant red admirals  and comma`s may still be seen amongst the ivy along with queen bumble bees, as long as we havn`t really had a cold snap yet. Wood mice,yellow-necked mice, bank and field voles will still be searching for hazel nuts to eat amongst the leaf litter. Protein rich hazel nuts are important food for a variety of creatures. You can tell what animals have been around by examining the empty shells. A woodmouse will leave a round hole on the side of the hazelnut, with marks of their upper teeth evident. A bank vole will leave a round hole on the top of the hazelnut, with a clearly delineated gnawed edge. A hazel dormouse will leave a round hole on the side of the hazelnut, unlike the woodmouse the edges will be smooth. Hedgehogs will be getting ready to hibernate during November. They use a process called gluco neogenisis to enable them to hibernate, I will be talking about this as well during a later blog. The hedgehogs along with the common dormice and our seventeen species of bats are the only British mammals that hibernate. With the onset of winter food can run short for certain species, so they face the simple choice to move with the food or hibernate and these three species choose to hibernate. Starlings may be seen in large roosts during November, We are not quite sure why they roost in such large numbers, possibilities include safety in numbers, increasing their foraging efficiency or simply for warmth. Its a wonderful sight as they fly around, moving all the time like a shoal of fish in the air then suddenly all descending onto the ground.

Surface area to volume ratio.

Example:- A hedgehog to a woodmouse.

There is a greater surface area to the woodmouse for the volume it has got.So if it is in a cold place it will call down quicker than the hedgehog. The hedgehog has less of a surface area but a greater volume to the woodmouse. So it is easier to keep the  core of the hedgehog warmer. So smaller animals will suffer more quickly. When we get a lot of snow bank and field voles and woodmice will stay under the snow as its actually warmer than being above it, they breathe by punching through the snow making little air holes. Stoats and weasels will suffer because they have lots of surface area to a very small volume.

Things to look out for in may

night
A peacock butterfly.

All of our birds are busy finishing their nests and getting ready for their chicks to be born.Swifts are now back after their epic journey from Africa, Amazingly these birds only land to have their clutch. They do everything on the wing from feeding to sleeping.Hedgerows come alive during this month with flowers like cow parsley,Lords and ladies,Hogweed,Goose grass,Hedge woundwart,herb robert and greater stitchwort.Fox cubs can be seen with their mother(the vixen),look out for them by their earth.Horse chestnut blossom is wonderful at this time of year,Also the
catkins on a oak tree are also glorious,Look out for the larger male flowers and the smaller female flowers behind the male flower.May flies start to emerge from rivers and streams during may.They emerge as sub adults from the water,They actually cast their old skins as they leave the water.Reed and sedge warblers start to build up their territories along rivers and canals during may.Bank and field voles have had a litter by now so look out for their young along hedgerows.Small red damselflies may be seen coming into your garden to look for water during dry spells.Blue and great tits will be busily feeding their young with tiny green caterpillars,Both parent birds feed their young,They may have up to twelve eggs in their clutch.The young chicks may be getting ready to fledge by the end of may or the beginning of June.Froglets will be getting ready to leave their breeding grounds soon,look out for them,but look carefully as they are extremely small.Badger cubs start to emerge during may as well,They will be seen feeding outside of their earth,This may only be for a short period though to start with.Hedgehogs may be seen on warm spring evenings in wonderful courtship displays with each other.They come out late at night looking for each other,But be aware these courtships can be very noisy with snuffling and snorting sounds.And finally the bug of the month goes to the common cockchafer or may bug,They may be seen at night near any artificial light during may.Also listen out for the wonderful call of the nightingale in deciduous woodlands .

Resource partitioning

This is when animals and creatures come out at night.It makes perfect sense for them to do this, Bats,owls and badgers mostly come out in the evening to forage for their food. Firstly its cooler at night for them. Snails,slugs and earthworms will die in the heat of the day so they come out when it is cooler, The animals take advantage of this to enable them to eat at night.Through resource partitioning owls take advantage of day-time raptors who are asleep at night,Meaning the owls have all the shrews,bank and field voles,harvest mice,yellow neckedmice and woodmice to themselves.Of the 800 large moths 100 of them come out in the day.So butterflies are not avoiding competition but they are avoiding predation.Bats take advantage of the moths coming out at night who themselves may well have become nocturnal to avoid predation themselves.

things to look out for in january

Hazel catkins during winter.

Now we are moving through winter,various animals and plants will slowly start to appear.Catkin's on hazel and alder trees start to appear,Hazel has a beautiful lemon yellow male catkins and red female flowers that will emerge from buds in the centre of the shoots.A breeze is all it takes for the pollen to start an amazing journey,a few will land on the female flowers,a few more make the nuts of autumn.Lesser celandine will carpet woodland floors and riverbanks during this month,they have a delightful yellow flower that tells you spring is on the way.Sparrowhawks may start building their nests now,depending on the amount of food that's around,For most of the time the sparrowhawk flies around unseen in dense cover throughout most of the year,but during winter because there are less leaves on the trees they become easier to spot.The sparrowhawk is an avian bird,this means they catch their quarry on the wing.There are around 32,000 sparrowhawks in Britain,this is our second most common bird of prey behind the kestrel.Lapwings feeding on a water logged field in the watery winter sun can be spotted during January.Starlings may be seen as well in large numbers looking for food and then coming down at night to roost,Wrens and tits may come into nest boxes to roost when it gets really cold,look out for them in your garden.Small mammals such as wood mice and bank and field voles may be seen as well,The wood mice will still be out looking for food so keep a look out for them,nibbling on shoots of grass are a give away,as their little bodies feel the squeeze of winter,they get bolder and more adventurous moving farther afield.Bank and field voles operate in runs as they move around looking for food,they will tolerate each other more during winter as they are searching for food,the runs are normally patrolled by one pair of voles.Small pellet-shaped droppings and fresh grass clippings are all giveaways that voles are in residence.Long tailed tits will come to your feeders in your garden during this month,but will most likely be seen off by the two great territory holders,the robin and the blackbird.Barn owls can be spotted,hunting low over fields looking voles and rats.Common frogs may not be spawning yet,the males will certainly be accumulating by their breeding grounds.Common frogs 'purr' and do not go 'rrribitt' as we have all been misled to believe.Damselfly,may and stone fly nymphs are stirring in our rivers waiting to emerge in spring and begin the cycle all over again.Fox's start mating during late December and January so its a good time to see the dog fox and his vixen together.Foxes are getting vociferous as the breeding season comes into full flow.The 'wow-wowing' bark and the blood-curdling scream,produced mainly by the vixen,are their way of getting the lowdown of who`s who and where.