Sunday, 30 June 2019
20-5-2019 BUMI HILLS, ZIMBABWE - CRESTED FRANCOLIN (Dendroperdix sephaena)
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The crested francolin, known scientifically as Ortygornis sephaena, is a distinguished member of the Phasianidae family. This bird is adorned with a notable crest, which gives it its common name.
When attempting to identify the crested francolin, look for its characteristic crest and the overall brown plumage with intricate patterns that provide excellent camouflage in its natural habitat.
The crested francolin is a bird of southern Africa, where it frequents a variety of habitats, adapting well to its surroundings.
This species is widely distributed across southern Africa, indicating a healthy and stable population in this region.
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Observations of the crested francolin's behavior reveal a bird that is well-adapted to its environment, exhibiting typical behaviors of the Phasianidae family.
There are several subspecies of the crested francolin, including O. s. grantii, O. s. rovuma (sometimes considered a separate species, Kirk's francolin), O. s. spilogaster, O. s. zambesiae, and O. s. sephaena.
The IUCN Red List has classified the crested francolin as Least Concern, indicating that, at present, there are no immediate threats to its population numbers that would warrant a higher level of concern.
21-5-2019 BUMI HILLS, ZIMBABWE - CHACMA BABOON (Papio ursinus)
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Chacma baboons are found throughout southern Africa, ranging from South Africa north to Angola, Zambia, and Mozambique. They live in diverse habitats from woodlands to savannas, steppes, and sub-deserts. Chacma baboons are found in the Kalahari Desert as well as on the alpine slopes of the Drakensberg. They usually sleep on hills, cliffs, or large trees and during the day, avoid arid areas with a lack of water.
The Chacma baboon (Papio ursinus) is a member of the Old World monkey family. It is one of the largest of all monkeys. Located primarily in southern Africa, the chacma baboon has a wide variety of social behaviors, including a dominance hierarchy, collective foraging, adoption of young by females, and friendship pairings. In general, the species is not threatened, but hunting, trapping, and accidents kill or remove many baboons from the wild, thereby reducing their numbers and disrupting their social structure.
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The Chacma baboon is perhaps the longest species of monkey and it is also one of the heaviest. Adult males can in some instances be about twice as long and three times as heavy as adult females. Perhaps the most distinctive feature of this baboon is its long, downward-sloping face. The Chacma baboon is generally dark brown to gray in color, with a patch of rough hair on the nape of its neck. Unlike the males of northern baboon species (Guinea, hamadryas, and Olive baboons), Chacma males do not have a mane. The three subspecies are differentiated by size and color. The Cape chacma is a large, heavy, dark-brown, and has black feet. The Gray-footed chacma is slightly smaller than the Cape chacma, lighter in color and build, and has gray feet. The Ruacana chacma generally appears to be a smaller, less darkly colored version of the Cape chacma.
21-5-2019 BUMI HILLS, ZIMBABWE - SMITH'S BUSH SQUIRREL (Paraderus Cepapi)
Smith's bush squirrel (Paraxerus cepapi), also known as the yellow-footed squirrel or tree squirrel, is an African bush squirrel which is native to woodlands of the southern Afrotropics.
It is found in Angola, Botswana, the DRCongo, Malawi, Mozambique, Namibia, South Africa, Tanzania, Zambia, and Zimbabwe. It is a common rodent which is diurnal by nature.
Its total length is 350 mm (14 in), half of which is tail; weight 200 g (7.1 oz). The coat colour varies throughout the region. In the western and arid parts of its range, it is pale grey, and in the eastern localities, more brown. Its head and legs are a rusty colour. Colouration on the chest varies from yellowish to buff in the east, to white in the west. This squirrel's belly is white. These alert and ever busy creatures carry their long tails extended backwards.
Smith's bush squirrels are primarily vegetarian, but like most rodents, they take insect prey and use their front feet to manipulate food items when feeding. They scatter-hoard seeds next to tree trunks or grass tufts, thereby facilitating tree regeneration.
Essentially arboreal animals, they also spend a great deal of time on the ground, foraging for food. When disturbed, Smith's bush squirrels always seek the refuge of trees. At night, territorial family groups nest together in holes in trees. Offspring become sexually mature between six and nine months old, when they are forcibly evicted by the breeding pair. The males are mainly responsible for territorial defense, although females also chase intruders when they care for dependent pups.
To promote group cohesion, a common scent is shared by mutual grooming, which is an important facet of the social fibre of this species. Smith's bush squirrels are diligent in their grooming and a mother tree squirrel holds her offspring down with her fore legs while grooming it with licks, nibbles, and scratches with her claws.
A conspicuous feature of their behaviour when under threat is 'mobbing': all the members of the colony make harsh clicking sounds while they flick their tails, building up momentum and gradually getting louder. In some areas, they are solitary, or are found in small family groups; a lone tree squirrel relies on its wits when in danger and always keeps a branch or the trunk of a tree between it and the enemy. Smith's bush squirrels are always alert, and when alarmed, run away with great speed, making for the nearest tree where they lie motionless, flattened against a branch.
30-6-2019 VILLALONGA RESERVOIR, VALENCIA - EPAULET SKIMMER DRAGONFLY (MALE AND FEMALE) (Orthetrum chrysostigma)
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Another pruinose Skimmer species, said to be one of Africa’s most common dragonflies, that has made it up into Spain.
Orthetrum chrysostigma, the epaulet skimmer, is a species of dragonfly in the family Libellulidae. It is found in Algeria, Angola, Benin, Botswana, Burkina Faso, Cameroon, Central African Republic, Chad, the Democratic Republic of the Congo, Ivory Coast, Egypt, Equatorial Guinea, Ethiopia, Gambia, Ghana, Guinea, Israel, Kenya, Liberia, Libya, Malawi, Mali, Mauritania, Morocco, Mozambique, Namibia, Niger, Nigeria, Senegal, Sierra Leone, Somalia, South Africa, Sudan, Tanzania, Togo, Uganda, Zambia, Zimbabwe, and possibly Burundi as well as Canary Islands, and Portugal. It was recorded in the Maltese Islands in 2010.
Its natural habitats are subtropical or tropical moist lowland forests, dry savanna, moist savanna, subtropical or tropical dry shrubland, subtropical or tropical moist shrubland, rivers, intermittent rivers, shrub-dominated wetlands, swamps, freshwater lakes, intermittent freshwater lakes, freshwater marshes, intermittent freshwater marshes, and freshwater springs. The adults prey on various flying insects. The bodies of adult males are blue, and those of young and females are yellow and brown.
Very widespread and occurs virtually throughout Africa, including North Africa. It also occurs in parts of Southern Europe and the Middle East. In South Africa it occurs virtually throughout, but is scarce in the dry central regions.
30-6-2019 LA LLACUNA, VILLALONGA - SPANISH GATEKEEPER BUTTERFLY (Pyronia bathseba)
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Pyronia bathseba, the Spanish gatekeeper, is a butterfly of the family Nymphalidae. It is found on the Iberian Peninsula and in France, Morocco, and Algeria. A similar gatekeeper species is Pyronia tithonus, which is found in northern Europe.
The wingspan is 18–19 mm. The butterfly is on wing from May to July depending on the location.
The larvae feed on Poaceae species, mainly Brachypodium species.
30-6-2019 LA LLACUNA, VILLALONGA - PAINTED LADY BUTTERFLY (Vanessa cardui)
Vanessa cardui is the most widespread of all butterfly species. It is commonly called the painted lady, or formerly in North America the cosmopolitan.
V. cardui occurs in any temperate zone, including mountains in the tropics. The species is resident only in warmer areas, but migrates in spring, and sometimes again in autumn. It migrates from North Africa and the Mediterranean to Britain and Europe in May and June, occasionally reaching Iceland, and from the Red Sea basin, via Israel and Cyprus, to Turkey in March and April. The occasional autumn migration made by V. cardui is likely for the inspection of resource changes; it consists of a round trip from Europe to Africa.
For decades, naturalists have debated whether the offspring of these immigrants ever make a southwards return migration. Research suggests that British painted ladies do undertake an autumn migration, making 14,500 km (9,000 mi) round trip from tropical Africa to the Arctic Circle in a series of steps by up to six successive generations. The Radar Entomology Unit at Rothamsted Research provided evidence that autumn migrations take place at high altitude, which explains why these migrations are seldom witnessed. In recent years, thanks to the activity of The Worldwide Painted Lady Migration citizen science project, led by the Barcelona-based Institute of Evolutionary Biology (Catalan: Institut de Biologia Evolutiva), the huge range of migration has begun to be revealed. For example, some butterflies migrated from Iceland to the Sahara desert, and even further south.
V. cardui is known for its distinct migratory behaviour. In California, they are usually seen flying from north to north-west. These migrations appear to be partially initiated by heavy winter rains in the desert where rainfall controls the growth of larval food plants. In March 2019, after heavy rain produced an abundance of vegetation in the deserts, Southern California saw these butterflies migrating by the millions across the state.
Similarly, heavier than usual rain during the 2018-2019 winter seems to have been the cause of the extraordinarily large migration observed in Israel at the end of March, estimated at a billion individual butterflies. Painted lady migration patterns are highly erratic and they do not migrate every year. Some evidence suggests that global climatic events, such as el Niño, may affect the migratory behaviour of the painted lady butterflies, causing large-scale migrations. The first noticeable wave of migration in eastern Ukraine was noted in the 20s of April 2019. From May 15, numbers began to grow and it was possible to observe hundreds of this species in the Kharkiv region of Ukraine, including in the city streets of Kharkiv.
30-6-2019 RIO SERPIS, VILLALONGA - COMMON OLEANDER (Nerium oleander)
Nerium oleander (/ˈnɪəriəm ... / NEER-ee-əm), commonly known as oleander or rosebay, is a shrub or small tree cultivated worldwide in temperate and subtropical areas as an ornamental and landscaping plant. It is the only species currently classified in the genus Nerium, belonging to subfamily Apocynoideae of the dogbane family Apocynaceae. It is so widely cultivated that no precise region of origin has been identified, though it is usually associated with the Mediterranean Basin.
Nerium grows to 2–6 metres (7–20 feet) tall. It is most commonly grown in its natural shrub form, but can be trained into a small tree with a single trunk. It is tolerant to both drought and inundation, but not to prolonged frost. White, pink or red five-lobed flowers grow in clusters year-round, peaking during the summer. The fruit is a long narrow pair of follicles, which splits open at maturity to release numerous downy seeds.
Nerium is a poisonous plant but its bitterness renders it unpalatable to humans and most animals, so poisoning cases are rare and the general risk for human mortality is low. Ingestion of larger amounts may cause nausea, vomiting, excess salivation, abdominal pain, bloody diarrhea and irregular heart rhythm. Prolonged contact with sap may cause skin irritation, eye inflammation and dermatitis.
30-6-2019 RIO SERPIS, VILLALONGA - GREY HERON (Ardea cinerea)
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The Grey Heron (Ardea cinerea) is a statuesque wading bird belonging to the family Ardeidae. It is a familiar sight in both rural and urban settings, often seen standing stoically along the water's edge. An adult Grey Heron is a large bird, reaching up to 100 cm in height, with a wingspan between 155 to 195 cm. It weighs between 1 to 2 kg. The plumage is predominantly ashy-grey above, with a greyish-white underbelly and some black on the flanks. A striking feature is the white head and neck adorned with a broad black stripe that extends from the eye to the black crest. The beak is pinkish-yellow, long, and sharply pointed, while the legs are a brown hue.
When identifying the Grey Heron, look for the white head with the black supercilium and crest, the long grey neck, and the ashy-grey wings and back. The underparts are lighter, and the legs are long and brown. Juveniles can be distinguished by their duller grey neck and smaller crest. The beak is a useful indicator of age, being brighter in breeding adults.
Grey Herons are highly adaptable and can be found in a variety of watery habitats including lakes, rivers, ponds, marshes, and coastal environments. They require shallow waters for foraging or areas with shelving margins where they can wade.
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Native to temperate Europe and Asia, as well as parts of Africa, the Grey Heron has a broad range. Northern populations may migrate southwards in autumn, while others remain resident year-round. Vagrant sightings have occurred in the Caribbean, Bermuda, and parts of North America.
The Grey Heron exhibits a slow, deliberate flight with its neck retracted in an S-shape. It is known for its solitary foraging habits, often standing motionless or stalking prey through shallow waters. It is also a communal rooster, often found in trees or cliffs at night.
The primary call of the Grey Heron is a loud croaking "fraaank." At breeding colonies, a variety of guttural and raucous noises can be heard, including greeting calls between mates and alarm calls when predators are nearby.
Breeding takes place in colonies, or heronries, typically in high trees near water. Nests are reused and added to each year. The breeding season sees a clutch of three to five bluish-green eggs laid, which both parents incubate. Chicks fledge at 7-8 weeks old.
The Grey Heron can be confused with the larger North American Great Blue Heron or the South American Cocoi Heron. However, it can be distinguished by its size and the coloration of its flanks and thighs.
Grey Herons are apex predators within their ecosystem, feeding on a variety of aquatic creatures such as fish, amphibians, crustaceans, and insects. They have also been known to consume small mammals and juvenile birds.
Saturday, 29 June 2019
20-5-2019 LAKE KARIBA, ZIMBABWE - AFRICAN FISH EAGLE (Icthyophaga vocifer)
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The African fish eagle (Icthyophaga vocifer) or the African sea eagle is a large species of eagle found throughout sub-Saharan Africa wherever large bodies of open water with an abundant food supply occur. It is the national bird of Malawi, Namibia, Zambia, and Zimbabwe. As a result of its large range, it is known in many languages. Examples of names include: visarend in Afrikaans, nkwazi in Chewa, aigle pêcheur in French, idì in Yoruba, hungwe in Shona, inkwazi in isiZulu, and ntšhu in Northern Sotho. Though this species may superficially resemble the bald eagle in appearance they are not closely related and the two species occur on different continents, with the bald eagle being endemic to North America.
The African fish eagle is a species placed in the genus Icthyophaga (fish eagles). Its closest relative appears to be the critically endangered Madagascar fish eagle (I. vociferoides). Like all sea eagle species pairs, this one consists of a white-headed species (the African fish eagle) and a tan-headed one (Madagascar fish eagle). These are an ancient lineage of sea eagles; like other sea eagles, they have dark talons, beaks, and eyes. Both species have at least partially white tails even as juveniles. The vocifer is derived from its original genus name, so named by the French naturalist François Levaillant, who called it 'the vociferous one'.
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The African fish eagle is a large bird. The female, at 3.2–3.6 kg (7.1–7.9 lb) is larger than the male, at 2.0–2.5 kg (4.4–5.5 lb). This is typical sexual dimorphism in birds of prey. Males usually have wingspans around 2.0 m (6.6 ft), while females have wingspans of 2.4 m (7.9 ft). The body length is 63–75 cm (25–29.5 in). The adult is very distinctive in appearance with a mostly brown body with a white head like the bald eagle and large, powerful, black wings. The head, breast, and tail of African fish eagles are snow white, except for the featherless face, which is yellow. The eyes are dark brown in colour. The hook-shaped beak, ideal for a carnivorous lifestyle, is yellow with a black tip. The plumage of the juvenile is brown, and the eyes are paler than the adult's. The feet have rough soles and are equipped with powerful talons to enable the eagle to grasp slippery aquatic prey. While this species mainly subsists on fish, it is opportunistic and may take a wider variety of prey, such as waterbirds. Its distinctive cry is, for many, evocative of the spirit or essence of Africa. The call, shriller when uttered by males, is a weee-ah, hyo-hyo or a heee-ah, heeah-heeah.
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This species is still quite common near freshwater lakes, reservoirs, and rivers, although it can sometimes be found near the coast at the mouths of rivers or lagoons. African fish eagles are indigenous to sub-Saharan Africa, ranging over most of continental Africa south of the Sahara Desert. Several examples of places where they may be resident, include the Orange River in South Africa and Namibia, the Okavango Delta in Botswana, and Lake Malawi bordering Malawi, Tanzania, and Mozambique. The African fish eagle is thought to occur in substantial numbers around the locations of Lake Victoria and other large lakes in Central Africa, particularly the Rift Valley lakes. This is a generalist species, requiring only open water with sufficient prey and a good perch, as evidenced by the number of habitat types in which this species may be found, including grasslands, swamps, marshes, tropical rainforests, fynbos, and even desert-bordering coastlines, such as that of Namibia. The African fish eagle is absent from arid areas with little surface water.
20-5-2019 BUMI HILLS, ZIMBABWE - SMITH'S BUSH SQUIRREL (Paraderus Cepapi)
Smith's bush squirrel (Paraxerus cepapi), also known as the yellow-footed squirrel or tree squirrel, is an African bush squirrel which is native to woodlands of the southern Afrotropics.
It is found in Angola, Botswana, the DRCongo, Malawi, Mozambique, Namibia, South Africa, Tanzania, Zambia, and Zimbabwe. It is a common rodent which is diurnal by nature.
Its total length is 350 mm (14 in), half of which is tail; weight 200 g (7.1 oz). The coat colour varies throughout the region. In the western and arid parts of its range, it is pale grey, and in the eastern localities, more brown. Its head and legs are a rusty colour. Colouration on the chest varies from yellowish to buff in the east, to white in the west. This squirrel's belly is white. These alert and ever busy creatures carry their long tails extended backwards.
Smith's bush squirrels are primarily vegetarian, but like most rodents, they take insect prey and use their front feet to manipulate food items when feeding. They scatter-hoard seeds next to tree trunks or grass tufts, thereby facilitating tree regeneration.
20-5-2019 BUMI HILLS, ZIMBABWE - AFRICAN SACRED IBIS (Threskiornis aethiopicus ssp. aethiopicus)
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The African sacred ibis (Threskiornis aethiopicus) is a striking wading bird from the family Threskiornithidae. It is characterized by its all-white plumage, save for the dark plumes on its rump. The adult bird measures approximately 68 cm (27 in) in length, with a wingspan ranging from 112 to 124 cm (44 to 49 in), and weighs between 1.35 to 1.5 kg (3.0 to 3.3 lb). Males are generally slightly larger than females. The species is distinguished by its bald head and neck, thick curved bill, and black legs. In flight, the white wings reveal a contrasting black rear border. The eyes are brown, encircled by a dark red orbital ring.
When identifying the African sacred ibis, look for the combination of its white body, black head, neck, and bill. Juveniles can be recognized by their less pristine white plumage, smaller bill, and some feathering on the neck. The presence of greenish-brown scapulars and more black on the primary coverts also helps to distinguish younger birds.
This ibis favors marshy wetlands and mud flats, both inland and along the coast. It is often found nesting in trees near water and is known to frequent very shallow wetlands, wet pastures with soft soil, cultivation areas, and rubbish dumps.
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The African sacred ibis is indigenous to Sub-Saharan Africa and parts of the Middle East, including small regions of Iraq, Iran, and Kuwait. The species has migratory populations that move with the rains, with some South African birds traveling as far north as Zambia, while those north of the equator migrate in the opposite direction.
The species has been introduced to various parts of Europe, including Italy, France, and the Netherlands, as well as to Florida, Taiwan, and the United Arab Emirates. In Europe, it is considered an invasive species.
The African sacred ibis is a social bird, often seen in flocks. It is predominantly silent, but can occasionally emit puppy-like yelping sounds. The species is known for its predatory feeding habits, which occur mainly during the day.
This species is usually silent, but may occasionally make puppy-like yelping noises.
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Breeding occurs once a year during the wet season, with the season spanning from March to August in Africa and from April to May in Iraq. The ibis builds a stick nest, often in a baobab tree, and nests in colonies alongside other large wading birds. Females lay one to five eggs, which are incubated by both parents for 21 to 29 days. Chicks fledge after 35 to 40 days and reach sexual maturity between one to five years after hatching.
The diet of the African sacred ibis consists mainly of insects, worms, crustaceans, molluscs, fish, frogs, reptiles, small mammals, and carrion. It uses its long beak to probe the soil for invertebrates and may also feed on seeds.
The IUCN classifies the African sacred ibis as "Least Concern," with an estimated global population of 200,000–450,000 individuals. However, the population appears to be decreasing. The species is covered by the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA).
The African sacred ibis was venerated in Ancient Egyptian religion, linked to the god Thoth. It was often mummified as a votive offering. The species was believed to fend off winged serpents and was associated with wisdom and knowledge.
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