The zebras
at Woodland Park Zoo represent the southern population and are commonly
referred to as Damara or Burchell's zebras. Zebras
live throughout eastern and southern Africa. Their home ranges vary
in size from 12-240 square miles (31-622 sq. km)
Habitat
Zebras inhabit open, grassy plains
or well-grassed woodlands. They can also be found on mountain slopes
up to 14,500 feet (4,420 m).
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Physical
Characteristics
The height of an adult plains zebra
is 44-58 inches (112-147 cm) at the shoulder. Their weight
varies greatly, from 385-847 pounds (175-385 kg). Males are
about 10% larger than females. |
Life
Span
In the wild, zebras live about 20-30 years; up
to 40 years at zoos
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Diet
In the wild: Plains
zebra rely almost totally on a variety of grasses, along with
some additional browse like leaves and twigs.
At the zoo: Keepers
feed them grass hay, pelleted feed, and sliced carrots for
treats.
Keepers also offer fresh browse when available.
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If you
like this animal and find it particularly fascinating you
can adopt it!
Reproduction
In the wild, mares
reach sexual maturity in 2-4 years. Males are able to compete for
mares after they reach about 4 years of age. When gathering females for
breeding, rival stallions compete fiercely by kicking and biting. Once
a male establishes a harem, ownership of that harem is rarely disputed,
unless he is unfit. The gestation period of a zebra is about 12 months.
Since a mare may come into estrus within days of giving birth, she can
conceive almost yearly. The female gives birth to usually one foal, as
twins are rare. At birth, a foal weighs about 70 pounds (32 kg), can
stand almost immediately and run within a day. Although a foal may graze
within a week of birth, they continue to suckle for up to 16 months.
The average juvenile mortality is about 50%, mostly due to predation
by lions and spotted hyena.
Life Cycle
Plains zebra are social
animals. Although they may live alone, they usually form bachelor groups
and small families of 5-20 animals, consisting of a dominant male,
mares and offspring. These zebras can either be sedentary or migratory;
their lifestyle is dependent on the availability of food. Where food
is mostly plentiful year-round, such as the Ngorongoro Crater in Tanzania,
they lead a sedentary life. In seasonally dry areas like the Serengeti
of Tanzania, small families of plains zebra gather to form large herds that migrate
in search of food. Staying together as a family group within large herds, they
migrate up to 500 miles (805 km) per year during their circular trek to and from
the Serengeti.
Plains zebra are extremely dependent on water and never wander far from waterholes,
where they usually drink at least once a day. Of interest, it is the responsibility
of an adult mare (often the oldest), to guide the family as they move from area
to area and ensure that they never wander too far from water.
Plains zebra are noisy and restless animals (due to predators). They have a distinctive
call, which may be described as a frequently repeated barking whinny. Their whinny
is more similar to a donkey whinny than a horse whinny. At night, families gather
together while one family member remains awake to look out for predators.
Seen One Stripe, Seen Them All?
Not when it
comes to zebras! While all zebras are easily identified by their dark and light
stripes, each species of zebra has its own variation of striping. A Plains zebra
has rather broad stripes, especially towards its rump. The color ranges from
black to dark brown on a white to buff background. In some cases, there will
be shadowing on the flank and rump between the dark and white striping. Although
there is no color variation between the sexes, plains zebras do vary in color
and pattern across their range. Moving from the north to the south of this specie's
range, there is a tendency for the stripes on the hindquarters to become less
well defined.
Other species of zebras exhibit varied striping as well. The Grevy's zebra has
narrow and closely spaced stripes that cover most of the body and extend to the
hooves. Mountain zebras tend to have narrower stripes on the body than the rump,
with no shadowing on the flank and rump like plains zebra. Mountain zebras have
faint stripes between darker stripes. The extinct quagga zebra often had very
little striping at all, some being almost stripeless.
Are
Zebras White with Black Stripes or Black with White Stripes?
Apparently, most Africans think zebras are black with white stripes. Zebra skin
color is mostly black, but what we see are rows of white and black hair. This
question is something similar to "which came first, the chicken or the egg?"
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Fascinating
Facts
- Naturalist W. J. Burchell brought the first
specimen of this species from South Africa to the British
Museum!
- Each zebra has its own personal striping
pattern. This makes identification of individuals easy for
researchers!
- While several attempts have been made over
the last two centuries, zebras have never been successfully
domesticated!
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Woodland
Park Zoo's zebras can be seen in the zoo's award-winning African
Savanna. Other mammals in this exhibit include the African wild dog,
lion, giraffe, hippopotamus and fringe-eared oryx. Take time to look
for African savanna birds.

The plains zebra is the only species of wild equid
not near or on the verge of extinction. Both
the Grevy's zebra and the mountain zebra are listed as endangered,
along with one other species in the family Equidae.** While
plains zebra populations remain plentiful, their numbers diminished
greatly in the last century. This is for several reasons. Humans
hunt them for sport and their skins. Zebras have also lost much suitable
and expansive enough habitat, due to the rapid expansion of human
populations. As with so many large animals, both prey and predator,
humans pose the greatest risk to zebra's continued existence in the
wild.
Woodland Park Zoo Is Helping-With Your Support!
The zebra is a highly iconographic African savanna species. Their presence on
the savanna immeasurably increases eco-tourism, providing income to local populations
without harming the animals. For many animals, flexible and sustainable conservation
programs are essential. Partnerships with other zoos support healthy captive
populations, while in-situ fieldwork provides successful on-ground solutions
for helping the zebra.
Each in-situ project supported by the zoo aims to provide a broad, holistic approach
to conservation, encompassing research, education, habitat and species preservation.
This includes comprehensive, cooperative strategies to link the needs of animals
with the people who share their ecosystems.
How You Can Help!
Woodland Park Zoo contributes information
to the captive breeding, husbandry and public awareness of this intriguing species.
The effort to save African mammals requires cooperation and support at the international,
national, regional and individual levels. You can help in this cause.
Join and become active in Woodland Park Zoo and other conservation organizations
of your choice. Let your elected representatives know your views on protecting
endangered species and wild habitats. Please do not buy products made from wild
animal parts.
Contact Woodland Park Zoo at webkeeper@zoo.org to find out how you can support conservation
efforts at the zoo. Learn other ways you can help conserve wildlife and the habitats
they require for survival, by visiting our How You Can Help page.
Sources and Suggested Reading
Grzimek, Bernhard, ed. 1975. Grzimek's Animal
Life Encyclopedia, Volume 12. Van Nostrand Reinhold Company, New York, NY.
657 p.
Nowak, Ronald M. ed. 1991. Walker's Mammals
of the World. 5th Edition. The Johns Hopkins University Press, Baltimore
and London. 1629 p.
Other Resources
Woodland Park Zoo Animal Management
Staff: Personal Correspondence
Woodland Park Zoo - Teacher Packet Fact Sheet (Burchell's Zebra)
* Taxonomic classification varies between references. Classification
information used in this fact sheet was taken from: Mammal Species of the
World: A Taxonomic And Geographic Reference, 2nd edition, edited by Don
E. Wilson and Dee Ann M. Reeder, 1993. Smithsonian Institution Press, Washington,
D. C. 1206 p.
** There are several international and federal agencies that determine the
endangered status of species. WPZ designates a species as endangered if it
is listed as endangered on the IUCN (International Union for the Conservation
of Nature) Red List, the US Fish & Wildlife Service's Endangered Species
List, or on Appendix I of CITES (Convention on the International Trade of Endangered
Species of Flora and Fauna). |