Rabbit
Cottontails live
throughout the South from bottomlands and marshes to the highest mountain balds. They thrive in openings wherever shrubs, grasses, and forbs dominate. Cottontails are commonly found in old home sites, abandoned orchards, broom
sedge fields, sumac patches, honeysuckle thickets, and brush piles.
Food
Cottontails diet consists of a variety of plants from many sources.
Succulent herbaceous materials, buds, bark, fruit,
seeds, and foliage of woody plants are the mainstay of the cottontail rabbit.
Cover
Cottontails prefer open areas with low ground cover of shrubs and herbaceous vegetation. Tunnel holes, briar patches, and
brush piles are needed for escape cover. Nests are usually in grass or herbaceous cover. Interspersion of cover types, or small areas in close proximity, is ideal for rabbits.
Cottontails are a food source for many
mammalian and avian predators. Cottontails can generally withstand heavy perdition if suitable habitat and cover is present.
Nests are dug in the ground and lined with grass and loose fur. Nests are relatively small,
about 4" across and 4" deep. The female rabbit, or doe typically has 2 or 3 litters per season with 3-8 rabbits per litter. After brooding, the nest is abandoned.
Water
Succulent plants
and dew provide the daily requirements for water. Although open water may be readily used, it is not a necessary element of their habitat.
Home Range
The home range of female cottontails is about
20 acres during breeding season and 15 acres in fall and winter. Adult males range up to 100 acres or more. Juveniles cover an average of 9 acres in late summer and up to 15 acres in fall.
The most distinctive features of the
eastern cottontail are its long ears, long hind legs and short white tail. An adult cottontail is about 15 to 18 inches long and weighs between two and three pounds. It varies in color from gray to brown and has a rust-colored
patch on the back of its neck.
Distribution
Although eight species of cottontail rabbits occur in the United States, only two inhabit Nebraska. The eastern cottontail is the most widely occurring
cottontail in the United States and is found throughout Nebraska. The desert cottontail occurs only in the western part of the state, primarily west of Ogallala. Neither species occurs in the vast dry uplands of the Sandals, but
both can be found in the bottom land habitat there.
Habitat and home
A cottontail is attracted to field and cover edges and early succession, or weedy, habitats. The eastern cottontail can be found
almost anywhere two types of cover meet; however, it prefers a mixture of grass, fords such as wildflowers or weeds, and dense thorny shrubs. It most prefers ground cover that is a mixture of open areas and dense vegetation. In
Nebraska, fence rows, shelter belts, stream sides, and roadsides are locations where this type of habitat may be found.
The Conservation Reserve Program has allowed for the development of excellent habitat in which
weeds grow before planted grasses become established. However, after two years these fields become pure stands of grass which will not support many rabbits.
A cottontail must rely on shrubs or woody cover for escape cover, and
the denser and thornier that cover is, the better the rabbit likes it. Succulent fords are also necessary for nutrition. Habitat that is capable of supporting cottontails is decreasing throughout the rabbit's range, as a result of
aging and deteriorating shelter belts, the removal of hedge rows, the farming of roadsides, and the over grazing of pastures, stream banks and lakeshores.
All habitat components needed by an animal are found in its home range.
The female cottontail's home range is one to 15 acres in size, while the male's may be as much as 100 acres.
A rabbit uses aboveground structures called "foams" and underground holes such as those of badger, prairie
dog and woodchuck for escape and shelter. Foams are pockets the rabbit creates by trampling down small areas of grass and small shrubs. It uses foams at night and during daytime rest periods throughout the year, even during the
reproductive period. After her litter is born, the female cottontail stays in a foam near the nest, only visiting her nest at dawn and dusk. The cottontail uses underground holes for emergency escape throughout the year and during
winter for shelter.
A rabbit nest is a shallow depression that the female digs and lines with grass and fur. Because the female does not stay at the nest after the litter is born, she covers the young with grass and fur to help
protect them from predators while she is away.
Habits
You may see a cottontail at any time of the day or night but the rabbit is most active at dusk and dawn. Its activity during midday is greatly decreased
unless the sky is heavily overcast.
Different behavior patterns are used by a threatened rabbit. If the danger is far away, it may freeze and remain motionless, using its background as camouflage. When the threat is
near, the rabbit moves quickly to nearby thick cover such as a thicket or brush pile. When cornered, it may thump its pursuer with a hind foot to stun it and then make a break for freedom. A rabbit may make a shrill, high-pitched
squeal when it is captured.
A cottontail may easily go into shock when captured. A person who finds it necessary to handle a cottontail should cover the captured or injured rabbit's eyes and handle it very slowly and
carefully.
A cottontail produces two types of droppings -- hard and brown or soft and green. The softer pellets are eaten again to further break down food. This is called coprophagy.
Foods
Basically a vegetarian, the cottontail eats primarily grasses and legumes, such as clover and lespedezas, during the growing season. A young rabbit consumes a considerable amount of fords such as dandelions, ragweed and
prickly lettuce. It eats numerous crops such as soybeans, wheat and corn, and during the non-growing season, young shoots and buds. When more preferred foods are scarce its diet may also include twigs and bark, and when other foods
are not available, it may resort to eating non-plant foods such as snails or carrion.
Reproduction
The breeding season begins in February in Nebraska. With a gestation period of 28 days and the
capability of a female to become pregnant the day after giving birth, litters can be produced on a monthly basis. By late June this efficiency breaks down and the female may not breed for several days or not at all after giving
birth. A female cottontail may have five to seven litters of four to five young in one year. Therefore, many rabbits can be produced in a year that has suitable weather for food availability and nest survival. In several studies
the number of juvenile cottontails taken by hunters in the fall compared to the number of adult rabbits is 80-85%, which is an indication of very high reproductive rates.
Young rabbits are an easy-to-catch and
plentiful food for many predator species from weasels to coyotes to birds of prey, making them a very important part of the food chain. As vegetative habitat dries in the fall, escape cover is reduced and the rabbits become more
and more exposed to predators. Many of the young produced each spring and summer are not alive by winter and even fewer are available for breeding the next spring. This is the typical reproductive strategy of such a highly used
prey species -- produce large numbers of young quickly to ensure that some will survive to reproduce the next year.
Mortality
Perdition is the primary direct cause of mortality for the cottontail.
Poor habitat conditions, disease and severe weather can all increase its chances of being taken by a predator.
Numerous parasites and diseases affect rabbits. The bacterial disease tularemia can cause a rabbit to be
more susceptible to perdition by making it less able to detect potentially dangerous movement or to evade capture.
Severe winter storms can cover food sources to the point that a rabbit has to eat low-quality food
such as tree bark. During prolonged periods of severe weather, the rabbit's physical condition may decrease to the point that it is unable to evade capture.
Importance
The cottontail rabbit is important as a
game animal across its entire range. In the United States, deer are the only game more pursued by hunters than the rabbit or hare. In Nebraska more pheasants, quail and doves are harvested each year than cottontails, which may
indicate that rabbits are an under utilized resource. Since the mid-1980s an average of 150,000 cottontails have been taken by approximately 26,000 hunters each year.
Unfortunately, many rabbit carcasses are
needlessly discarded by hunters each year due to the presence of two parasites which do not affect man. The larvae of bottles (commonly called warbles) are sometimes found under a rabbit's skin. If the hunter encounters a warble in
a rabbit or finds an abscess under the skin where a warble has recently left the rabbit, he can remove that area of the meat and still use the rest of the carcass, provided the meat is cooked properly.
Tapeworm cysts are also
found in rabbits. These are sacs of clear fluid that contain small white floating objects and are found attached to the rabbit's liver, intestines and occasionally to its lungs. These cysts are the larval stage in the life cycle of
the dog tapeworm. If a dog or wild canine consumes one of these larvae it may develop into a tapeworm, but tapeworms do not develop in humans from these larvae. All of the larvae are normally removed when the rabbit is dressed MD
any overlooked cysts are destroyed during the cooking process. This disease is often confused with "white spots on the liver" that are known to be indicative of tularemia.
Tularemia is a bacterial disease of rabbits
that is transmittable to man, usually through openings in the skin. Hunters who notice small white or yellow spots on the surface of the rabbit's liver when they are field dressing it should discard the entire rabbit immediately.
During the early stages of the disease the liver can appear normal, though the infected rabbit may behave oddly, move slowly or be easily captured. It is a good idea to wear rubber gloves when dressing a rabbit and it is important
to always cook rabbit meat thoroughly. Tularemia is transmitted between rabbits by fleas and ticks. Rabbits die from the disease, so it is not a problem once there has been a good hard frost and the temperature remains cool. A hard
frost kills ticks and fleas which carry the disease, and a rabbit infected prior to the freeze will normally die within a few days of contracting the disease.