Category Archives: South African Wildlife

The inhabitants of South Africa’s wild places

Eastern Grey Squirrel

Sciurus carolinensis

The Eastern Grey Squirrel is not indigenous to South Africa. It was imported from North America to the city of Cape Town, by way of Great Britain, in the late 1890’s. Thankfully it has not spread much further than Cape Town’s suburbs and surrounding towns in the years since, as it relies on the nuts of plants like oaks and pines that also are not found naturally in this country. In addition they’ve been recorded feeding on cultivated fruits from orchards and gardens, fungi, insects and eggs.

Eastern Grey Squirrels are usually encountered alone or as small family groups. They nest in holes in trees or construct their own nests – called dreys – in the forks of branches. While they’re very agile in trees they often forage on the ground. They’re also well known for hoarding food stores by burying it for later consumption. Litters of 1-4 kits are born at anytime of year and leave the nest when they’re about 2 months old. In the wild they may live to about 8 years old, though most die within two years of birth. Adults weigh around 550g and measure between 40 and 50cm in length, of which the tail accounts for roughly half.

One of the very best places to see these critters locally are in the Tokai Plantation, a spacious picnic area managed as part of the Table Mountain National Park.

Cecil John Rhodes, the man responsible for establishing the Eastern Grey Squirrel (and Chaffinch and Common Starling) in South Africa, is a controversial figure. A staunch proponent of British imperialism, he amassed an enormous fortune here at the southern end of Africa. As this isn’t a political blog we won’t delve into his legacy any further, but whether you despise or admire the man you cannot help but be impressed by the magnificent memorial erected for him on the slopes of Devil’s Peak (inside the Table Mountain National Park) in Cape Town after his death at the rather young age of 48 in 1902.

Cape Fur Seal

Arctocephalus pusillus pusillus

The Cape Fur Seal is the only seal that is native to the continent of Africa, being found from Namibia’s Atlantic coast to Gqeberha (formerly Port Elizabeth) on South Africa’s Indian Ocean coast (rarely further east to East Londen). They live in coastal waters, roaming up to 160km from the coastline, and prey mainly on schooling fishes like sardines and mackarel, octopuses, chokka (a type of squid), crabs, lobsters and other invertebrates. While hunting the seals can dive up to 200m deep and stay submerged for up to 8 minutes!

Cape Fur Seal breeding colonies are usually located on rocky islands and shores, though there are a few on sandy beaches. Bulls establish their territories from mid-October in preparation of the cows arriving about a month later, first to give birth to a single pup and then to mate with the “beach master” – the bull in control of that territory and the harem of cows in it – about a week later. The harems break up by end of December when all the females of reproductive age have been mated. The pups can’t swim until they’re about 3 months old and are prone to drowning after being struck of the rocks by freak waves or being caught by land-based predators like jackals and hyenas. Adult bull seals, at 2.4m in length and up to 360kg in weight, are much bigger than the cows who weigh up to 115kg. They may live to about 18-21 years of age in the wild, though even adults may fall prey to sharks and killer whales.

Several operators use the Hout Bay harbour near Cape Town to conduct sight-seeing tours of about an hour to the large seal colony at Duiker Island. During our December 2022 tour of the Western Cape we booked ourselves on the Calypso operated by Circe Launches for one such trip, and found the company a thoroughly professional outfit that we’d gladly recommend and certainly use again ourselves.

Yellow Weaver

Ploceus subaureus

The Yellow Weaver, or Eastern Golden Weaver, is a very social bird closely associated with reedbeds lining coastal rivers, lakes, dams and other permanent waterbodies, venturing into the surrounding savanna to search for the seeds, insects and nectar on which it feeds. Fully grown they weigh approximately 31g and measure 15cm in length.

Yellow Weavers breed colonially during spring and summer and will often occur alongside other weaver species. The males are polygamous, weaving several circular grass nests, often directly over the water, and trying to impress as many females as possible. The female is solely responsible for incubating the clutch of 2-4 eggs and caring for the chicks, which leave the nest at about 3 weeks old.

In South Africa the Yellow Weaver is confined to the coastal plain along the Indian Ocean coastline from the Eastern Cape to far northern Kwazulu-Natal. Beyond our borders their distribution extends as far as central Kenya. According to the IUCN the Yellow Weaver is of least concern.

Collared Pratincole

Glareola pratincola

The Collared Pratincole is a migrant to South Africa, usually arriving to breed from about July and departing again by February. They’re found in open habitats – overgrazed grasslands, floodplains, sand banks and so on – near reliable large water sources like dams, lakes and estuaries. They’re most active by dusk and dawn, catching insects in flight and on the ground, and often follow herds of game or stock to catch the invertebrates they flush.

Adult Collared Pratincoles measure about 25cm in length with a weight of around 75g. While they’re usually seen in substantial flocks, often numbering into the thousands, they are monogamous breeders, laying clutches of 2 eggs in shallow depressions (like animal footprints) on the bare ground. Incubation takes a little less than 3 weeks and is shared between the parents. The chicks start flying when they’re about 4 weeks old.

The Collared Pratincole is very widely distributed over Africa, Europe and west and central Asia. and the IUCN lists it to be of least concern overall. In South Africa they are found, mostly during our spring and summer months, in the Lowveld and northern Kwazulu-Natal, and are considered rare and near-threatened.

Rufous-winged Cisticola

Cisticola galactotes

The Rufous-winged Cisticola, also known as the Black-backed Cisticola, occurs only in a rather limited portion of Southern Africa, stretching from southern Malawi and central Mozambique southwards to the Kwazulu-Natal / Eastern Cape border in South Africa. It is very common where it occurs and the IUCN lists it as being of least concern.

As with others of its family the Rufous-winged Cisticola is a small bird, measuring about 13cm long and weighing only about 13g. It inhabits low-lying wetlands, reedbeds, adjacent grassland and sugarcane plantations, living mainly of insects. They are usually seen singly or in pairs. Rufous-winged Cisticolas are monogamous and build their ball-shaped nests just slightly above ground or water level in dense vegetation in marshy areas. Their breeding season spans spring and summer, during which the pair raise a brood of 2-4 chicks. The incubation period lasts about 2 weeks, with the chicks leaving the nest about the same length of time after hatching.

Southern Banded Snake Eagle

Circaetus fasciolatus

The Southern Banded Snake Eagle inhabits coastal forests and their edges where they feed primarily on reptiles, including venomous snakes, and amphibians. They will also venture into commercial timber plantations that replaced their native forest habitat over much of their local range.

Monogamous and territorial, pairs of Southern Banded Snake Eagles construct their stick-platform nests in the canopies of tall indigenous or plantation trees and usually use these for several consecutive breeding seasons. The female lays a single egg in spring and takes most of the responsibility for its incubation over a 7 week period and for caring for the chick at the nest for its first few weeks after hatching, while the male does most of the hunting to provide food for the female and chick. Fully grown they measure about 58cm long, boast a wingspan of around 1.25m and weigh approximately 1kg.

With a very low density population, estimated between 1,000 and 3,000 spreading over a distribution stretching along Africa’s Indian Ocean coast from southern Somalia to the northern corner of Kwazulu-Natal Province in South Africa, the IUCN considers the Southern Banded Snake Eagle to be near-threatened. Most of their very small local population, probably numbering well below 100 individuals and considered vulnerable, is found in the iSimangaliso Wetland Park.

 

Green Twinspot

Mandingoa nitidula

The beautiful little Green Twinspot, a tiny member of the finch family that is only 11cm long and 10g in weight, is easily overlooked in its forest habitat where it feeds mainly on seeds. They’ll also readily venture into plantations and gardens where there are grass seeds to be had. When disturbed they always fly high into the tree canopy to wait there quietly until the threat has passed.

Green Twinspots are often seen in small family groups of up to 10, though they form monogamous pairs in the breeding season (and sometimes for more than one season), which spans the months of spring and summer. Their nest is a rough ball of plant material with a side entrance usually built quite high among dense foliage in which both partners roost together at night. The female lies between 4 and 6 eggs and both parents incubate the clutch for a period of 2 weeks. The chicks fledge at about 3 weeks of age but will keep coming back to the nest for about another week or so before becoming totally independent.

According to the IUCN, the Green Twinspot is of least concern, despite occasionally being trapped for the pet trade. It has a very patchy distribution over much of sub-Saharan Africa, while in our country they’re largely restricted to coastal Kwazulu-Natal and the escarpment of Limpopo and Mpumalanga.

Tailor Ants

Oecophylla longinoda

Tailor Ants, or Weaver Ants, naturally inhabit humid forests, which limits their South African distribution to the northern coast of Kwazulu-Natal (where their unique nests are a common sight in the iSimangaliso Wetland Park). Beyond our borders they’re distributed throughout Africa’s equatorial regions.

A single colony of Tailor Ants usually have several nests within their territory, which they fiercely defend by injecting formic acid when biting assailants, be they other ants, birds or animals and even humans. These nests are constructed using silk produced by the larval ants to bind together living leaves. In one nest the queen, which produces about a hundred eggs per day, lives, while the other nests are used by the workers (which measure up to 11mm in length) to care for the young ants or – fascinatingly! – farm with scale insects. The ants subsist on the honeydew these scale insects secrete as well as on other insects they hunt in the trees or on the ground.

African Pygmy Goose

Nettapus auritus

With a weight of only 260g, the African Pygmy Goose is one of the smallest members of the duck family to be found in South Africa. They’re seen in close association with bodies of clear water densely vegetated with water lilies, the flowers and seeds of which forms the bulk of their diet, and other floating and emergent plants amongst which they’ll often sit entirely motionless to avoid detection. When threatened they’ll more usually dive below the water surface than fly away.

African Pygmy Geese form monogamous pairs with a very strong bond and are usually seen in pairs or family groups. They make their nests in holes in trees and will readily use nest boxes erected for them. The breeding season stretches from the start of spring to the end of autumn. Clutches may number up to 13, but more usually 7-9, eggs. The female is solely responsible for incubating the eggs, which takes about 4 weeks. Soon after hatching the chicks jump from the nest to follow their mother to the water. The chicks can fly by the time they’re about 6 or 7 weeks old.

The IUCN considers the African Pygmy Goose as being of least concern. While it has a very wide distribution in sub-Saharan Africa and also occurs on Madagascar, in our country they are considered to be near-threatened and only encountered with any regularity in the wetlands along the northern coastline of Kwazulu-Natal.

Green Malkoha

Ceuthmochares australis

Another very rarely seen bird with a limited distribution in South Africa – only found here along the coast of Kwazulu-Natal – and one that I saw for the first time on my recent trip to the iSimangaliso Wetland Park with my younger brother, is the Green Malkoha (also known as the Green Coucal or Whistling Yellowbill).

The Green Malkoha is a bird of coastal forest habitats and a member of the cuckoo-family. It feeds on a wide range of small vertebrates (with a special fondness for tree-living frogs) and insects, and also a limited selection of fruits. They are usually seen singly or in pairs, preferring to creep through the thick vegetation like a rodent rather than flying.

Green Malkohas form monogamous pairs in the spring breeding season, building rather flimsy platform nests in dense thicket on which clutches of 2-4 eggs are laid – rather unusual in the cuckoo-family, where most species are brood parasites. Aside from the fact that both parents take care of the young after they’ve hatched little else is known of this species’ breeding habits. Fully grown, Green Malkohas weigh about 70g and measure 33cm in length.

The IUCN considers the Green Malkoha to be of Least Concern. Beyond its limited South African occurrence it can be found along the Indian Ocean seaboard and adjacent interior as far north as southern Somalia, with an isolated population on the Ethiopian Highlands.