With its wild stare, swift speed and secretive nature, the UK’s brown hare is the rabbit’s mysterious cousin. Even in these days of agricultural intensification, the hare is still to be seen in open countryside, but its numbers are falling.

A Like many herbivores, brown hares spend a relatively large amount of their time feeding. They prefer to do this in the dark, but when nights are short, their activities do spill into daylight hours.  Wherever they live,

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_Q7 hares appear to have a fondness for fields with a variety of vegetation, for example short as well as longer clumps of grasses. Studies have demonstrated that they benefit from uncultivated land and other unploughed areas on farms, such as field margins. Therefore, if farmers provided patches of woodland in areas of pasture as well as assorted crops in arable areas, there would be year-round shelter and food, and this could be _Q1 the key to turning round the current decline in hare populations.

B Brown hares have a _Q2 number of physical adaptations that enable them to survive in open countryside. They have exceptionally large _Q13 ears that move independently, so that a range of sounds can be pinpointed accurately. Positioned high up on their heads, the hares’ large golden eyes give them 360° _Q12 vision, making it hard to take a hare by surprise. Compared to mammals of a similar size, hares have a greatly enlarged heart and a higher volume of blood in their bodies, and this allows for superior speed and _Q10 stamina. In addition, their legs are longer than those of a rabbit, enabling hares to run more like a _Q11 dog and reach speeds of up to 70 kph.

C Brown hares have unusual lifestyles for their large size, _Q3 breeding from a young age and producing many leverets (babies). There are about three litters of up to four leverets every year. Both males and females are able to breed at about seven months old, but they have to be quick because they seldom live for more than two years. The breeding season runs from January to October, and by late February most females are pregnant or giving birth to their first litter of the year So it seems strange, therefore, that it is in March, when the breeding season is already underway, that hares seemingly go mad: boxing, dancing, running and fighting. This has given rise to the age-old reference to ‘mad March hares’. In fact, boxing occurs throughout the breeding season, but people tend to see this behaviour more often in March. This is because in the succeeding months, dusk – the time when hares are most active – is later, when fewer people are about. Crops and vegetation are also taller, hiding the hares from view. Though it is often thought that they are males fighting over females, boxing hares are usually females fighting off males. Hares are mostly solitary, but a female fights off a series of males until she is ready to mate. This occurs several times through the breeding season because, as soon as the female has given birth, she will be ready to mate again.

D But how can females manage to do this while simultaneously feeding themselves and rearing their young? The reason is that hares have evolved such self-sufficient young. Unlike baby rabbits, leverets are born furry and mobile. _Q4 They weigh about 100 g at birth and are immediately left to their own devices by their mothers. A few days later, the members of the litter creep away to create their own individual resting places, known as ‘forms’. Incredibly, their mother visits them only once every 24 hours and, even then, she only suckles them for a maximum of five minutes each. This lack of family contact may seem harsh to us, _Q8 but it is a strategy that draws less attention from predators. At the tender age of two weeks, leverets start to feed themselves, while still drinking their mother’s milk. They grow swiftly and are fully weaned at four weeks, reaching adult weight at about six months.

E Research has shown that hares’ milk is extremely rich and fatty, so a little goes a long way. In order to produce such nutritious milk, females need a high-quality, high-calorie diet. _Q5 Hares are selective feeders at the best of times: unlike many herbivores, they can’t sit around waiting to digest low-quality food – they need high- energy herbs and other leaves in order to sprint.This causes them problems when faced with the smallest alterations in food availability and abundance. _Q9 So, as well as reductions in the diversity of farmland habitat, the decline in the range of food plants is injurious to hares.

F The rapid turnaround in the breeding cycle suggests that hares should, in principle, be able to increase their populations quickly to exploit new habitats. _Q6 They certainly used to: studies show that hares evolved on the open plains and spread rapidly westward from the Black Sea after the last ice age (though they were probably introduced to Britain as a species to be hunted for the pot by the Romans). But today’s hares are thwarted by the lack of rich farmland habitat. When the delicate herbs and other plants they rely on are ploughed up or poisoned by herbicides, these wonderful, agile runners disappear too, taking with them some of the wildness from our lives.

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