The impala (, Aepyceros melampus ) is a medium-sized antelope found in eastern and southern Africa. The only extant member of the genus Aepyceros and tribe Aepycerotini, it was first described to European audiences by German zoologist Hinrich Lichtenstein in 1812. Two subspecies are recognised—the common impala, and the larger and darker black-faced impala. The impala reaches 70–92 cm (28–36 in) at the shoulder and weighs 40–76 kg (88–168 lb). It features a glossy, reddish brown coat. The male's slender, lyre-shaped horns are 45–92 cm (18–36 in) long.
Active mainly during the day, the impala may be gregarious or territorial depending upon the climate and geography. Three distinct social groups can be observed: the territorial males, bachelor herds and female herds. The impala is known for two characteristic leaps that constitute an anti-predator strategy. Browsers as well as grazers, impala feed on monocots, dicots, forbs, fruits and acacia pods (whenever available). An annual, three-week-long rut takes place toward the end of the wet season, typically in May. Rutting males fight over dominance, and the victorious male courts female in oestrus. Gestation lasts six to seven months, following which a single calf is born and immediately concealed in cover. Calves are suckled for four to six months; young males—forced out of the all-female groups—join bachelor herds, while females may stay back.
The impala is found in woodlands and sometimes on the interface (ecotone) between woodlands and savannahs; it inhabits places near water. While the black-faced impala is confined to southwestern Angola and Kaokoland in northwestern Namibia, the common impala is widespread across its range and has been reintroduced in Gabon and southern Africa. The International Union for Conservation of Nature (IUCN) classifies the impala as a species of least concern; the black-faced subspecies has been classified as a vulnerable species, with fewer than 1,000 individuals remaining in the wild as of 2008.
Di
DiurnalDiurnal animals are active during the daytime, with a period of sleeping or other inactivity at night. The timing of activity by an animal depends ...
He
HerbivoreA herbivore is an animal anatomically and physiologically adapted to eating plant material, for example, foliage, for the main component of its die...
Fo
FolivoreIn zoology, a folivore is a herbivore that specializes in eating leaves. Mature leaves contain a high proportion of hard-to-digest cellulose, less ...
Te
TerrestrialTerrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, snails), as compared with aquatic animals, which liv...
Cu
CursorialA cursorial organism is one that is adapted specifically to run. An animal can be considered cursorial if it has the ability to run fast (e.g. chee...
Al
AltricialAltricial animals are those species whose newly hatched or born young are relatively immobile. They lack hair or down, are not able to obtain food ...
Gr
GrazingGrazing is a method of feeding in which a herbivore feeds on plants such as grasses, or other multicellular organisms such as algae. In agriculture...
Br
BrowsingBrowsing is a type of herbivory in which an herbivore (or, more narrowly defined, a folivore) feeds on leaves, soft shoots, or fruits of high-growi...
Te
TerritorialA territory is a sociographical area that which an animal consistently defends against the conspecific competition (or, occasionally, against anima...
Vi
ViviparousAmong animals, viviparity is the development of the embryo inside the body of the parent. The term 'viviparity' and its adjective form 'viviparous'...
Po
PolygynyPolygyny is a mating system in which one male lives and mates with multiple females but each female only mates with a single male.
So
SocialHe
HerdingA herd is a social grouping of certain animals of the same species, either wild or domestic. The form of collective animal behavior associated with...
Do
Dominance hierarchyA dominance hierarchy (formerly and colloquially called a pecking order) is a type of social hierarchy that arises when members of animal social gr...
No
Not a migrantAnimals that do not make seasonal movements and stay in their native home ranges all year round are called not migrants or residents.
I
starts withBe
Best HornsImpala is an elegant and magnificent species of antelope. The animal has slender body with the identifying "M"-like marking on the rear. This medium-sized antelope possesses thin, pointed horns with tips, lying far apart from each other. Males of this species are identified by the characteristic "S"-like horns. The elegant limbs of these animals have scent glands behind the ankles. The overall coloration of their fur is red-brown with paler sides. In addition, they have black and white colored areas on their body. Thus, the tail, belly, chin, lips, inside ears as well as the lines above the eyes are colored with white. Meanwhile, black bands cover their thighs, tail, forehead and ear tips.
Impalas are distributed throughout northeastern part of South Africa, Angola, southern Rwanda, Uganda and Kenya. Close proximity to a water source is an important life condition for these animals. Generally, they prefer woodland with little undergrowth as well as low to medium height grassland.
These antelopes are both diurnal and nocturnal. They are most active just after sunrise and before sunset, socializing and moving with their herd, whereas, during the nighttime hours, impalas usually lie down and ruminate. Female impalas and their offspring gather into herds, containing from 15 to 100 individuals. The home range of each herd covers a territory, varying from 80 to 180 hectares. During the wet season, females become highly territorial, defending home ranges of their herds. On the other hand, young males form bachelor, non-territorial herds of up to 30 individuals. During the dry season, male and female herds can often be seen mixed together. Home ranges of mature breeding males vary from season to season. Thus, at the breeding season they usually have smaller home ranges, which they fiercely defend. Males use wide variety of methods to defend their home range, including fighting, tail-raising, chasing, roaring, erect posture as well as forehead marking and forehead rubbing.
Impalas are herbivores (folivores). As grazers, these antelopes consume grass, while as browsers, they feed upon wide variety vegetation, including fruits, seedpods, shoots as well as leaves of trees and bushes.
Impalas have polygynous mating system, where each male mates with a number of females. The period of peak breeding activity is March-May. During this period, pregnant females live in isolation to give birth. Gestation period lasts from 194 to 200 days, yielding a single calf, which weighs about 5kgs (11 lbs). After a few days, the calf and the female rejoin the herd. Then, after a while, the calf joins a crèche of other young impalas. They are weaned at 4-5 months old. Male impalas reach sexual maturity at 1 year of age, while females - between 1 and 2 years old. Becoming sexually mature, they, however, do not rush to establish territories. They typically start mating only at 4 years old.
The animals presently suffer from fragmentation of their range due to development of human settlements. In addition, roads such as the Serengeti Highway in Tanzania have an extremely negative affect, making it difficult for scattered migrating populations to move between parks, where the antelopes feed, mate and give birth. In addition, populations in South Africa are exposed to hunting for their meat by local people.
Impalas are fairly common throughout the area of their habitat. Their population is presently stable and estimated to 2,000,000 mature individuals. The species is classified on the IUCN Red List as Least Concern (LC).
These herbivores are the top consumers of their habitat. Living in African savanna, they play a significant role in the local food chain due to feeding upon shrubs and grasses, which give them energy as well as increase their fat and muscles. In addition, impalas, along with other animal species of the area, are key prey items for local predators such as lions, leopards and hyenas.
Social animals are those animals that interact highly with other animals, usually of their own species (conspecifics), to the point of having a rec...