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Sunday, 10 June 2018

10-6-2018 MONTE CORONA, VALENCIA - STONE CENTIPEDE (Order Lithobiomorpha)


Lithobiidae is a family of centipedes in the order Lithobiomorpha,

Like other centipedes, they are more active at night. They feed on insects and other small invertebrates. The eggs are deposited singly in soil. The lifespan can be over 3 years.

Why shouldn't you touch a centipede?
However, an experiment conducted in the 1920s concluded that the pain most commonly subsides after a number of hours. There can be swelling around the bite, and some victims may experience nausea, sweating and the swelling of lymph nodes following an attack. Centipedes should not be handled since they may bite.


Although there is no set season for millipedes and centipedes, they do come out in large numbers twice per year: in the spring when they lay eggs and in the fall when they prepare to overwinter.

Centipedes prefer moist, high-humidity environments to live. To eliminate these areas, repair water leaks, use dehumidifiers to keep basements dry and run exhaust fans in bathrooms and attics to help eliminate excess moisture.

House centipedes can run along walls, floors and ceilings and may reach speeds of over one foot per second.

Saturday, 9 June 2018

9-6-2015 MONTE CORONA, VALENCIA - WAVE MOTH (Idaea minuscularia)


Idaea, sometimes called Hyriogona, is a large genus of geometer moths. They are found nearly worldwide, with many native to the Mediterranean, the African savannas, and the deserts of western Asia. As of 2013, there were about 680 species in the genus.

9-6-2015 MONTE CORONA, VALENCIA - MEDITERRANEAN SPOTTED CHAFER (Oxythyrea funesta)


Common name “White spotted rose beetle”.

This beetle is present in most of Europe, in the eastern Palearctic realm, and in the Near East.

Larvae are up to 30 mm long, they feed on plant roots and can remain until next spring in the soil.

The adults appear early in the spring, they grow up to 8–12 millimetres (0.31–0.47 in) and can mostly be encountered from May through July. They are considered an insect pest that do not just feed on pollen, but rode the floral organs, especially damaging light in color buds and flowers.


Their colour is black, more or less bronzed. Most of the specimens show six white spots in two longitudinal rows on the pronotum and many others on the elytra. They are completely covered with white pubescence (easily visible in profile). Older specimens usually have no hairs, as they are rubbed off with time.

9-6-2015 MONTE CORONA, VALENCIA - RAT TAILED MAGGOT FLY (Eristalis similis)


Eristalis similis is a European species of hoverfly.


Eristalis similis belongs to the subfamily Eristalinae, tribe Eristalini.
Distribution:
Palaearctic
Habitat:
Mature/overmature deciduous forest (Fagus, Quercus) and Mediterranean evergreen oak forest (Quercus ilex/Quercus suber), also coniferous forests, parks, gardens and roadsides with flowering plants.
Description:
Eristalis similis has a body length of 13 - 14(16) mm. The feet of the front legs are black. Males show distinct red-brown spots on abdominal segment 2 and 3, females small spots on segment 2. The wings possess a yellow-brown pterostigma four times longer than wide.
Similar species:
A similar species is the Tapered Drone Fly (Eristalis pertinax) with a dark brown pterostigma that is 2 - 3 times as long as wide and with yellowish forefeet.
Biology:
Eristalis similis flies in Germany (usually in 2 generations) from March/April to August. In southern Europe, the flight period extends from February to November.
The imagines visit the flowers of Angelica, Buxus, Chaerophyllum, Convolvulus, Crataegus , Euonymus, Hypericum, Mentha aquatica, Parnassia, Ranunculus, Salix, Sambucus ebulus, Sorbus aria and Tilia. Males and females like to sit on tree trunks in the sun. The males hover at a height of 2 - 4 meters.

9-6-2015 MONTE CORONA, VALENCIA - BUFF TAILED BUMBLE BEE (Bombus terrestris)


Bombus terrestris, the buff-tailed bumblebee or large earth bumblebee, is one of the most numerous bumblebee species in Europe. It is one of the main species used in greenhouse pollination, and so can be found in many countries and areas where it is not native, such as Tasmania. Moreover, it is a eusocial insect with an overlap of generations, a division of labour, and cooperative brood care. The queen is monogamous which means she mates with only one male. B. terrestris workers learn flower colours and forage efficiently.

B. terrestris are pollen-storing bees that generally feed and forage on nectar and pollen. The queen is between 20 and 22 mm long, males range from 14 to 16 mm, and workers from 11 to 17 mm. Workers have white-ended abdomens, and look just like workers of the white-tailed bumblebee, B. lucorum, a close relative, apart from the yellowish bands of B. terrestris being darker in direct comparison. The queens of B. terrestris have the namesake buff-white abdomen tip ("tail"); this area is white as in the workers in B. lucorum. B. terrestris is unique compared to other bees in that their caste of workers exhibit a wide variation in worker size, with thorax sizes ranging from 2.3 to 6.9 mm in length and masses ranging from 68 to 754 mg.


B. terrestris is most commonly found throughout Europe and generally occupies temperate climates. Because it can survive in a wide variety of habitats, there are populations in the Near East, the Mediterranean Islands, and Northern Africa as well. Additionally, it has escaped captivity after being introduced as a greenhouse pollinator in countries where it is not native, so this bee is now considered an invasive species in many of these places, including Japan, Chile, Argentina, and Tasmania. Nests are usually found underground, such as in abandoned rodent dens. Colonies form comb-like nest structures with egg cells each containing several eggs. The queen will lay egg cells on top of one another. Colonies produce between 300 and 400 bees on average, with a large variation in the number of workers.

Like in most social bees, there are three main social caste divisions in B. terrestris. This ensures a division of labor and efficient colony functioning. Queens become the main female individual to reproduce in a future colony. There is only one per colony. Her sole responsibility is to lay eggs after she founds a nest. This fate is determined for larvae that receive more food, have longer instar stages, and higher levels of juvenile hormone biosynthesis. Workers, an entirely female caste, mainly forage for food, defend the colony, and tend to the growing larvae. They are usually sterile for most of the colony cycle and do not raise their own young. Unlike queens and workers, which develop from fertilized diploid eggs, drones, or male bees, are born from unfertilized, haploid eggs. Drones leave the colony shortly after reaching adulthood to find a mate outside the nest. Mating is their sole role in the colony.



9-6-2015 MONTE CORONA, VALENCIA - HALF EDGED WALL JUMPING SPIDER (Menemerus semilimbatus)


Menemerus semilimbatus is a spider in the family Salticidae.
 
Menemerus semilimbatus are about 6.5–8.4 millimetres (0.26–0.33 in) long, the male being slightly smaller than the female. These fairly big jumping spiders are dorso-ventrally flattened and are covered with short dense, grayish-white hairs, with hairy whitish palps and a white band on the side margins of the carapace, showing also a small white, triangular marking in the middle. The eyes are large and forward-facing. The legs are light brown with darker rings and patches, while the abdomen is dorsally yellowish or grayish, with a characteristic pattern of several bright V-shaped markings. The females show a notch at the posterior edge of the epigyne and two oval depressions in the anterior half.
 
Menemerus semilimbatus is a Mediterranean species widely distributed in Europe, southern Asia and in Africa. In the Americas, it has been reported for Argentina, Chile, Ecuador and USA.

These spiders are synanthropic living in gardens and inside and on the outside of houses. It is usually found on the walls of buildings where it stalks its prey.

17-4-2018 CHOBE RIVER, BOTSWANA - BLACK. HERON (Egretta ardesiaca)


The black heron, also known as the black egret, is a medium-sized bird, cloaked in an alluring black plumage that is complemented by a similarly hued bill and contrasting yellow feet. During the breeding season, it adorns itself with elegant long plumes that grace its crown and nape, adding to its mystique.

To identify the black heron, look for its distinctive black coloration and yellow feet. The bird stands between 42.5 to 66 cm tall and weighs approximately 0.27 to 0.39 kg. The breeding plumage, with its extended plumes on the head and neck, is particularly noteworthy.


The black heron is partial to shallow open waters, where it can be found along the edges of freshwater lakes and ponds. Its habitat also extends to marshes, riverbanks, rice fields, and seasonally flooded grasslands. In coastal regions, it frequents tidal rivers, creeks, alkaline lakes, and tidal flats.

This species is patchily distributed throughout Sub-Saharan Africa, from Senegal and Sudan down to South Africa, with a strong presence on the eastern half of the continent and in Madagascar. There have been occasional sightings in Greece and Italy.


The black heron is renowned for its unique hunting method known as canopy feeding, where it creates a shade with its wings to lure fish—a behavior that has captivated audiences in documentaries. It can feed solitarily or in groups, sometimes amassing in numbers up to 200. These herons are diurnal feeders with a preference for dusk and roost communally at night. Coastal flocks are known to roost at high tide.

Adept at fishing, the black heron's diet primarily consists of small fish, but it will also consume aquatic insects, crustaceans, and amphibians to satisfy its nutritional needs.


The black heron nests at the onset of the rainy season, either alone or in mixed-species colonies that can number in the hundreds. Its nests are constructed from twigs and are situated over water in trees, bushes, or reed beds. The eggs are described as dark blue, and a typical clutch comprises two to four eggs.

The black heron is currently listed as Least Concern on the IUCN Red List, indicating that it is not at immediate risk of population decline or habitat loss at a global scale.

17-4-2018 CHOBE RIVER, BOTSWANA - WHITE HEADED LAPWING (Vanellus albiceps)


The White-crowned Lapwing, also known as the White-headed Lapwing, White-headed Plover, or White-crowned Plover, is a medium-sized wader that presents a striking appearance. Its upper body is adorned with a brown back, while the wings and tail exhibit a bold black and white pattern. The underparts are a clean white. The head is particularly distinctive with a grey base, a brilliant white crown, and a white foreneck. Adding to its unique visage are the yellow eyering, facial wattles, and legs. Both sexes and juveniles share a similar plumage, making them indistinguishable in the field.

When attempting to identify the White-crowned Lapwing, look for the unmistakable combination of its white crown, grey head, and the contrasting black and white patterns on its wings and tail. The yellow eyering and wattles are also key features that aid in its identification.

17-4-2018 CHOBE RIVER, BOTSWANA - GREATER KUDU (Tragelaphus Strepsiceros)


The Greater kudu (Tragelaphus strepsiceros) is a woodland antelope found in Africa. Despite occupying such widespread territory, Greater kudus are sparsely populated in most areas due to declining habitat, deforestation, and poaching.

Greater kudus have a narrow body with long legs, and their coats can range from brown/bluish-grey to reddish-brown. They possess between 4 and 12 vertical white stripes along their torso. The head is usually darker in color than the rest of the body and exhibits a small white v-shaped mark that runs between the eyes. Bulls tend to be much larger than cows, and vocalize much more; they also have beards running along their throats and large horns with two and a half twists.


The range of Greater kudu extends from the east in Ethiopia, Tanzania, Eritrea, and Kenya into the south where they are found in Zambia, Angola, Namibia, Botswana, Zimbabwe, and South Africa. Other regions where they occur are the Central African Republic, Chad, the Democratic Republic of the Congo, Djibouti, Malawi, Mozambique, Somalia, Swaziland, and Uganda. These antelopes live in mixed scrub woodlands and bush on abandoned fields and degraded pastures, mopane bush, and acacia in lowlands, hills, and mountains. They will occasionally venture onto plains only if there is a large abundance of bushes but normally avoid such open areas to avoid becoming an easy target for their predators.


Greater kudus are social animals that live in groups within their home areas. Females usually form small groups of 6-10 with their offspring, but sometimes they can form a herd of up to 20 individuals. Male kudus may form small bachelor groups, but they are more commonly found as solitary and widely dispersed individuals. Solitary males will join the group of females and calves only during the mating season. Home ranges of maternal herds can overlap with other maternal herds while home ranges of adult males generally encompass the ranges of two or three female groups. Greater kudus may be active throughout the 24-hour day. During the day, they normally cease to be active and instead seek cover under woodland, especially during hot days. They feed and drink in the early morning and late afternoon, acquiring water from waterholes or roots and bulbs that have high water content. When a herd is threatened by predators, an adult (usually female) will issue a bark to alert the rest of the herd. Greater kudus communicate using many other vocalizations, including low grunts, clucks, humming, and gasping.


Greater kudus are polygynous meaning that one male mates with more than one female. They breed at the end of the rainy season, which can fluctuate slightly according to the region and climate. Before mating, there is a courtship ritual that consists of the male standing in front of the female and often engaging in a neck wrestling. The male then trails the female while issuing a low-pitched call. Gestation takes around 240 days and calving generally starts between February and March, when the grass tends to be at its highest. Females usually bear one calf, although occasionally there may be two. The pregnant female will leave her group to give birth; once she gives birth, the newborn is hidden in vegetation for about 4 to 5 weeks (to avoid predation). After 4 or 5 weeks, the calf will accompany its mother for short periods of time; then by 3 to 4 months of age, it will accompany her at all times. By the time it is 6 months old, the calf is quite independent of its mother. Female Greater kudus reach reproductive maturity at 15-21 months of age while males reach maturity when they are 21-24 months old.

Friday, 8 June 2018

19-4-2018 NXABEGA LODGE OKAVANGO DELTA, BOTSWANA - AFRICAN LEOPARD (JUVENILE) (Panthera pardus pardus) COURTESY OF MRS VALERIE FISHER


The leopard has an exceptional ability to adapt to changes in prey availability, and has a very broad diet. It takes small prey where large ungulates are less common. The known prey of leopards ranges from dung beetles to adult elands, which can reach 900 kg (2,000 lb). In sub-Saharan Africa, at least 92 prey species have been documented in leopard scat, including rodents, birds, small and large antelopes, hyraxes, hares, and arthropods. Leopards generally focus their hunting activity on locally abundant medium-sized ungulates in the 20 to 80 kg (44 to 176 lb) range, while opportunistically taking other prey. 

Average intervals between ungulate kills range from seven to 12–13 days. Leopards often hide large kills in trees, a behavior for which great strength is required. There have been several observations of leopards hauling carcasses of young giraffes, estimated to weigh up to 125 kg (276 lb), i.e. 2–3 times the weight of the leopard, up to 5.7 m (19 ft) into trees.

19-4-2018 NXABEGA LODGE OKAVANGO DELTA, BOTSWANA - COMMON IMPALA (FEMALE) (Aepyceros melampus ssp. melampus) COURTESY OF MRS VALERIE FISHER


The impala or rooibok (Aepyceros melampus, lit. 'black-footed high-horn' in Ancient Greek) 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 Europeans by German zoologist Hinrich Lichtenstein in 1812. Two subspecies are recognised—the grassland-dwelling common impala (sometimes referred to as the Kenyan impala), and the larger and darker black-faced impala, which lives in slightly more arid, scrubland environments. 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.

19-4-2018 NXABEGA LODGE OKAVANGO DELTA, BOTSWANA - TSESSEBE (Damaliscus lunatus) COURTESY OF MRS VALERIE FISHER



The common tsessebe or sassaby (Damaliscus lunatus lunatus) is the southern, nominate subspecies of Damaliscus lunatus, although some authorities have recognised it as an independent species. It is most closely related to the Bangweulu tsessebe, sometimes also seen as a separate species, less to the topi, korrigum, coastal topi and tiang subspecies of D. lunatus, and less to the bontebok in the same genus. Common tsessebe are found in Angola, Zambia, Namibia, Botswana, Zimbabwe, Eswatini (formerly Swaziland), and South Africa.

Common tsessebe are among the fastest antelopes in Africa and can run at speeds up to 90 km/h.

Adult tsessebe are 150 to 230 cm in length They are quite large animals, with males weighing 137 kg and females weighing 120 kg, on average. Their horns range from 37 cm for females to 40 cm for males. For males, horn size plays an important role in territory defense and mate attraction, although horn size is not positively correlated with territorial factors of mate selection. Their bodies are chestnut brown. The fronts of their faces and their tail tufts are black; the forelimbs and thigh are greyish or bluish-black. Their hindlimbs are brownish-yellow to yellow and their bellies are white. In the wild, tsessebe usually live a maximum of 15 years, but in some areas, their average lifespan is drastically decreased due to overhunting and the destruction of habitat.


The most significant difference between the tsessebe, the southernmost subspecies, and the other topi subspecies is the incline of the horns, with the tsessebe having horns which are placed further apart from each other as one moves distally. This has the effect of the space between them having a more lunate profile when seen from a certain angle, as opposed to lyrate, more like that of a hartebeest. Tsessebe populations show variation as one moves from South Africa to Botswana, with southerly populations having on average the lightest pelage colour, smallest size and the least robust horns. Common tsessebe do not differ significantly from the Bangweulu tsessebe, the northernmost population, but in general the populations from that part of Zambia are on average the darkest-coloured and have the most robust horns, although differences are slight and individuals in both populations show variation in these characteristics which almost completely overlap each other.

Tsessebe are social animals. Females form herds composed of six to 10, with their young. After males turn one year of age, they are ejected from the herd and form bachelor herds that can be as large as 30 young bulls. Territorial adult bulls form herds the same size as young bulls, although the formation of adult bull herds is mainly seen in the formation of a lek. Tsessebe declare their territory through a variety of behaviors. Territorial behavior includes moving in an erect posture, high-stepping, defecating in a crouch stance, ground-horning, mud packing, shoulder-wiping, and grunting.

9-4-2018 NXABEGA LODGE OKAVANGO DELTA, BOTSWANA - SOUTHERN GREY HEADED KINGFISHER (Halcyon leucocephala ssp pallidiventris) COURTESY OF MRS VALERIE FISHER


The Southern Grey-headed Kingfisher, Halcyon leucocephala, presents a striking figure with its pale grey head, black mantle, and a vivid blue rump. Its wings and tail share this blue brilliance, while the chestnut underparts add a warm contrast. The beak, long and sharp, is a notable red. This bird averages 21 cm in length, a size that allows it to maneuver with agility in its preferred habitats.

When identifying the Grey-headed Kingfisher, look for the combination of its grey head and chestnut belly, which distinguishes it from similar species. The subspecies H. l. pallidiventris has a darker grey head and paler chestnut underparts. The bird's bright blue rump, wings, and tail are also key identification features.

This kingfisher favors woodlands, scrub, and cultivated areas, and can be found at altitudes up to 2,200 meters. It is often seen near water, though it does not rely on aquatic environments.


The species is widely distributed across tropical and semi-tropical regions of Africa and the Arabian Peninsula, from the Cape Verde Islands and Mauritania to Ethiopia, Somalia, southern Arabia, and southward to South Africa.

The Grey-headed Kingfisher is typically solitary or found in pairs. It is known for perching motionless on a branch for extended periods, keenly observing the ground for insects or small lizards before striking. It is protective of its nesting sites, often dive-bombing potential threats such as monitor lizards.

The song of the Grey-headed Kingfisher is a series of notes that ascend, descend, and then ascend again, growing increasingly strident. Its warning call is a sharp "tchk, tchk, tchk, tchk."

This kingfisher nests in holes within steep riverbanks and exhibits aggressive behavior in defending its nest.

18-4-2018 CHOBE NATIONAL PARK, BOTSWANA - AFRICAN LION (Panthera leo) COURTESY OF MRS VALERIE FISHER


The lion (Panthera leo) is a large cat of the genus Panthera, native to Africa and India. It has a muscular, broad-chested body; a short, rounded head; round ears; and a dark, hairy tuft at the tip of its tail. It is sexually dimorphic; adult male lions are larger than females and have a prominent mane. It is a social species, forming groups called prides. A lion's pride consists of a few adult males, related females, and cubs. Groups of female lions usually hunt together, preying mostly on medium-sized and large ungulates. The lion is an apex and keystone predator.

The lion inhabits grasslands, savannahs, and shrublands. It is usually more diurnal than other wild cats, but when persecuted, it adapts to being active at night and at twilight. During the Neolithic period, the lion ranged throughout Africa and Eurasia, from Southeast Europe to India, but it has been reduced to fragmented populations in sub-Saharan Africa and one population in western India. It has been listed as Vulnerable on the IUCN Red List since 1996 because populations in African countries have declined by about 43% since the early 1990s. Lion populations are untenable outside designated protected areas. Although the cause of the decline is not fully understood, habitat loss and conflicts with humans are the greatest causes for concern.

8-6-2015 MONTE CORONA, VALENCIA - SIERRA NEVADA OCELLATED LIZARD (Timon nevadensis)




16-4-2018 CHOBE NATIONAL PARK, BOTSWANA - SOUTHERN MAGPIE SHRIKE (Urolestes melanoleucus ssp. melanoleucus) COURTESY OF MRS VALERIE FISHER


The Southern Magpie Shrike, also known as the African Long-tailed Shrike, is a striking bird belonging to the family Laniidae. It is characterized by its elongated tail and contrasting black and white plumage, reminiscent of the European magpie, though they are not closely related.

This species can be identified by its long tail, which is almost the length of its body, and its black and white coloration. The bird's back is predominantly black, with white underparts and a white patch on the wing. The head is black with a white belly and flanks, and the eyes are keen and alert.

The Magpie Shrike is native to the grasslands of eastern and southeastern Africa. It thrives in dry savannah, moist savannah, and subtropical or tropical dry shrubland, preferring open areas with scattered acacia trees, close-grazed turf, and bare ground.

This bird is found across a range of African countries, including Angola, Botswana, Eswatini, Kenya, Mozambique, Namibia, South Africa, Tanzania, Zambia, and Zimbabwe. It is common in places within this range.

The Magpie Shrike is a gregarious and social bird, often found in noisy groups of about a dozen. These groups occupy a home range of several tens of hectares. During the breeding season, they display a variety of behaviors such as bowing, tail flicking, wing raising, and whistling to communicate and establish bonds.

16-4-2018 CHOBE NATIONAL PARK, BOTSWANA - COMMON GIRAFFE (Giraffa camelopardalisi) COURTESY OF MRS VALERIE FISHER


The Northern giraffe (Giraffa camelopardalis) is the world’s tallest living animal native to North Africa. The giraffe has intrigued various ancient and modern cultures for its peculiar appearance and has often been featured in paintings, books, and cartoons. living African elephant species. It is the largest living terrestrial animal and is distributed across 37 African countries. Since 2021, it has been listed as Endangered on the IUCN Red List. It is threatened foremost by habitat destruction, and in parts of its range also by poaching for meat and ivory.


Giraffes are easily identified due to their exclusively long neck. The legs of giraffes are long and solid. The hind legs are shorter than the front legs. The eyes are quite large, the ears are medium-sized and the muzzle is long. The short mane stands upright. The tail is long and thin with a dark tassel of hair at the tip. Giraffes have short and sandy-colored coats. They have pelage markings of different shapes, colored in various shades of brown. This animal has bony horns or ossicones, placed on the top of its head. Normally, the horns of giraffes are medium-sized in both males and females. Male giraffes can sometimes grow another pair of horns behind the first pair. Females are identified by thin and tufted ossicones while males usually have thick horns with the hair, smoothed due to sparring.

The area of their distribution is segmental, stretching southwards from Chad to South Africa and eastwards - from Niger to Somalia. Giraffes are frequently found in areas with Acacia trees. The most suitable habitat for these animals is dry, arid land. They inhabit grasslands, savannas, and open woodlands.


Due to their large size, these animals spend a lot of time eating, usually in the mornings and evenings. They rest standing up during the night. In the heat of the day, they will rest in shady areas, regurgitating the food and then ingesting it again. Female giraffes and their young gather into small herds, keeping constantly together, to protect the calves from predators. Males prefer leading solitary lives, traveling long distances to find a fertile female. When two rival males encounter each other, they start "necking" - bumping heads and interlocking the necks to defend their mating rights and set up a dominance hierarchy. The winner of the encounter will be allowed to mate with local females.

Giraffes are herbivorous (folivorous, lignivorous, frugivorous, graminivorous) with their diet, mainly consisting of acacia trees. Being browsers, these animals will also consume flowers, fruits, buds, and wild apricots. In addition, they love eating seeds and fresh grass after the rain. They rarely drink, obtaining about 70% of the required moisture from food.

Giraffes are polygynous, meaning that males mate with multiple females. Usually, males engage in combats, after which the winner gets right to mate with receptive females whenever and wherever it finds them. Normally, the gestation period lasts 13-15 months, yielding a single baby, rarely - twins. The female gives birth in a calving area, which she further uses throughout her life. A newborn calf can walk in just an hour after birth and can run within 24 hours after birth. Weaning occurs at 1 year old. Then, at the age of 15 months, the young become fully independent. While reproductive maturity is reached at 4-5 years old, males start mating no sooner than 8 years of age.

Thursday, 7 June 2018

16-4-2018 CHOBE NATIONAL PARK, BOTSWANA - HAMERKOP (Scopus umbretta) COURTESY OF MRS VALERIE FISHER


The Hamerkop (Scopus umbretta), a medium-sized wading bird, is the sole representative of its genus and family. Its distinctive hammer-shaped head, complete with a long bill and a rear crest, has inspired its name from the Afrikaans term for "hammerhead." Exhibiting a uniform brown plumage, this bird is a familiar sight across Africa, Madagascar, and parts of Arabia.

Adult Hamerkops are characterized by their brown plumage with a subtle purple sheen on the back. The tail features faint barring of a darker brown. Both sexes appear similar, and juveniles resemble the adults. The bill, long and slightly hooked, is particularly compressed and thin, especially towards the lower mandible. Initially brown in young birds, the bill darkens to black upon fledging.


Hamerkops are found in a plethora of wetland habitats, ranging from estuaries, lakesides, and fish ponds to riverbanks and rocky coasts. They have also adapted to human-altered environments, often seen in villages and agricultural areas.

This species is widespread across sub-Saharan Africa, Madagascar, and coastal southwestern Arabia. It is generally sedentary, with some local movements observed.

When solitary, the Hamerkop is relatively quiet, save for a shrill flight-call. In contrast, when in groups, it becomes more vocal, producing a variety of cackles and nasal rattles. The "yip-purr" call is a notable social vocalization, often accompanied by wing flapping.


Hamerkops are renowned for their massive nests, which are sturdy enough to support a human's weight. These nests, built by both parents, feature an internal chamber for egg-laying and are often constructed in tree forks or on human structures. Both parents share incubation duties and chick rearing.

The Hamerkop can be confused with young storks or herons due to its size and shape, but its unique head shape and behavior are distinctive.

A generalist feeder, the Hamerkop's diet includes fish, amphibians, shrimps, insects, and occasionally rodents. It hunts in shallow waters, using both sight and touch, and is known to be adaptable in its feeding strategies.

The Hamerkop is classified as Least Concern by the IUCN, with a stable population trend and widespread local abundance in its range.

18-4-2018 CHOBE NAT PARK, BOTSWANA - BLACK HEADED HERON (Ardea melanocephala)COURTESY OF MRS VALERIE FISHER


The black-headed heron, Ardea melanocephala, is a stately wading bird from the heron family Ardeidae. It stands at an impressive 85 cm in height, with a wingspan stretching to 150 cm. Its plumage is predominantly grey, with a darker shade above and a paler grey below. The bird is named for its striking black head, which contrasts with its grey body. A powerful dusky bill completes its commanding appearance.

When identifying the black-headed heron, look for its large size, nearly matching that of the grey heron. Its black head and neck, along with the grey body, are key distinguishing features. In flight, observe the slow wingbeats and the retracted neck, a common trait among herons. The white underwing coverts are particularly noticeable when the bird is airborne.

This heron is commonly found in a variety of wetland habitats throughout sub-Saharan Africa and Madagascar. It is comfortable in both shallow water and dry grasslands.

The black-headed heron is widespread across much of sub-Saharan Africa and Madagascar. It is mainly a resident species, though some individuals from West Africa may migrate northward during the rainy season.

The black-headed heron exhibits typical heron behavior, often seen feeding in shallow waters or stalking prey in grasslands. It is known to stand motionless, waiting for prey, or to slowly stalk its victim with stealth and precision.

The vocalizations of the black-headed heron include a distinctive loud croaking, often heard during dusk at heronries.

16-4-2018 CHOBE NATIONAL PARK, BOTSWANA - GREATER KUDU (Tragelaphus Strepsiceros) COURTESY OF MRS VALERIE FISHER


The Greater kudu (Tragelaphus strepsiceros) is a woodland antelope found in Africa. Despite occupying such widespread territory, Greater kudus are sparsely populated in most areas due to declining habitat, deforestation, and poaching.

Greater kudus have a narrow body with long legs, and their coats can range from brown/bluish-grey to reddish-brown. They possess between 4 and 12 vertical white stripes along their torso. The head is usually darker in color than the rest of the body and exhibits a small white v-shaped mark that runs between the eyes. Bulls tend to be much larger than cows, and vocalize much more; they also have beards running along their throats and large horns with two and a half twists.