
Physical Characteristics
The Gravy's zebra is long-legged and is the biggest of the wild equids.
It is closely related to the wild ass than the horse - the
plains zebra is more closely related to the horse. The Grevy’s zebra
can be
distinguish from the plains zebra by its larger
size, big rounded ears, white unmarked underbelly, and finer black
stripes. An endangered species, Grevy’s zebras are only found in
northern Kenya and south eastern Ethiopia.
Zebra foals are born with a coat that is stripped reddish-brown.
This gradually darkens to black. Young zebras also have a dorsal
mane extending all the way to the base of the tail, which can be
raised when the animal is excited and lies flat when it is relaxed.
Habitation
Historically, Grevy's zebra inhabited the semi-arid scrublands and
plains of Somalia, Ethiopia, Eritrea, Djibouti, and Kenya in East
Africa. However, due to a rapid decline in their population, they
are now restricted to the northern parts of Kenya and a few pockets
in southern Ethiopia.
Behavior and Habits
The Grevy’s zebra is a loosely social animal; herd composition
varies daily as members come and go. A stallion’s attachment to his
land and a mare’s attachment to her young are the most stable
relationships in Grevy’s zebra community. Within the herd, dominance
is relatively non-existent, except for the right a territorial male
has to a breeding female. If no females are around, the resident
male will associate with bachelor males in a friendly manner (though
always asserting dominance upon initiation of contact).
Grevy's mate throughout the year, but the peak birth and mating
periods for the Grevy's zebra are usually July through August and
October through November. Grevy's zebras breed in 2 year intervals
starting at the age of 3 for females and age 6 for males. Newborn
foals are russet-colored with a long hair crest down the back and
belly. The mother keeps other zebras at a distance while the
offspring imprints on her and they spend time playing, nuzzling, and
nursing. Newborns can walk in just under 20 minutes after birth,
which is an important survival adaptation for this migrating
species. Young Grevy's are especially vulnerable to predators, and
foal survival has been directly related to the extent to which their
mothers move.
Diet
Grevy’s zebras are ruminants and graze like cattle, however they can digest many types and parts of
plants that cattle cannot. However, they are water dependant, and will
migrate to grazing lands within daily reach of water.
Predators and Threats
Habitat loss in an already restricted range is a serious threat to
the endangered Grevy’s zebra. Additionally, it must compete with
livestock for a limited water supply and is hunted by poachers for
its striking hide. Conservation activities are found mostly in the
Samburu Heartland where
their is a Grevy’s Zebra Project run by the African Wildlife
Foundation. Its goal is to gain a better understanding of
this animal’s population and distribution patterns to aid in the
development of a viable conservation strategy.
Thought You Should Know
-
Stripes to a zebra are like fingerprints to a human. No two
patterns are identical. Researchers use the unique stripes to
identify individuals.
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Grevy's zebras can run up to 40 mph (64 kph).
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Foals can run with the rest of the herd within an hour of their
birth. They can also recognize their mothers using their eyesight
and their sense of smell.