Wednesday, 3 July 2019
3-7-2019 SOLLANA, VALENCIA - BLACK CROWNED NIGHT HERON (Nycticorax nycticorax)
The Black-crowned Night Heron, scientifically known as Nycticorax nycticorax, is a medium-sized heron with a global presence, spanning parts of Europe, Asia, and the Americas. It is distinguished by its black crown and back, contrasting with a white or grey body, red eyes, and short yellow legs. Notably, it deviates from the typical heron silhouette, appearing more robust with shorter bills, legs, and necks compared to its egret and day heron relatives.
Adults boast a striking black crown and back, with the rest of their plumage primarily white or grey. Their eyes are a vivid red, and they stand on short yellow legs. During social interactions, such as greeting or courtship, they display two or three elongated white plumes that extend from the back of their heads. Males and females are similar in appearance, though males may be marginally larger. Juveniles, on the other hand, are cloaked in a dull grey-brown with pale spots and streaks, and their eyes are a more subdued orange with less vibrant legs.
These herons favor fresh and salt-water wetlands as their breeding grounds, which are found across their vast range.
The Black-crowned Night Heron breeds across various regions: from Eurasia to Africa, the Indonesian Archipelago, North and South America, and even the remote Falkland Islands. While migratory in the northern extremes, it is generally a resident species, with North American populations wintering in warmer climes from Mexico to the West Indies.
21-5-2019 BUMI HILLS, ZIMBABWE - PINK JACARANDA (Stereospermum kunthianum)
Stereospermum kunthianum is an African deciduous shrub or small tree occurring in the Democratic Republic of Congo, Djibouti, Eritrea, Ethiopia, Kenya, Malawi, Senegal, Somalia, Sudan, Tanzania and Uganda. It is widespread across Africa to the Red Sea, and reaches as far south as Angola, Mozambique, Zambia and Zimbabwe. There are some 30 species with a Central African and Asian distribution.
Growing to 25 cm diameter, it has thin, grey-black bark, smooth or flaking in patches resembling the London plane; the trunk is rarely straight, with twisted branches. Usually 5m tall, but occasionally up to 15m, with abundant, fragrant, precocious, pink or purplish flowers, making the tree a spectacular sight. The alternate leaves are imparipinnately compound and some 25 cm long; leaflets are nearly opposite with one terminal leaflet, and with short, soft hairs, oblong to oblong-elliptic in shape, green and hairless above, yellowish-green with prominent venation below, apex somewhat attenuate, and the base tapering. The leaf margin may be entire or sometimes toothed in coppice shoots, while petiolules are virtually absent. Petioles may be up to 7 cm long, and are caniculate. Immature leaves are occasionally toothed and hairy.
The calyx is campanulate, 5-6mm long and almost glabrous; the corolla is some 5 cm long, with the tube softly pubescent; panicle large, usually softly pubescent. Fruits are slender, flat, paired pods up to 60 x 1 cm, cylindrical, pendulous, spirally twisted, smooth, splitting in two and releasing many flat, long, narrow seeds winged at each end, 2.5–3 cm long. The remains of the pods persist on the tree for several months. Preferring sandy and clay soils, it is often found in association with termite mounds.
The timber is white with yellowish or pinkish stains, and is used for making mortars. The bark is used for treating bronchitis and other pulmonary complaints, while roots and leaves are also used in traditional medicine.
Tuesday, 2 July 2019
26-5-2019 SOMALISA CAMP, ZIMBABWE - KALAHARI YELLOW BILLED HORNBILL (Tockus leucomelas ssp. leucomelas)
The Southern Yellow-billed Hornbill, known scientifically as Tockus leucomelas, is a medium-sized bird, with a length ranging from 48 to 60 centimeters and a weight between 132 and 242 grams. Its most striking feature is the long, down-curved yellow beak, which is disproportionately large compared to its body, making up to one-sixth of its body length. Males boast a longer beak, averaging 90 millimeters, while females have a slightly shorter one, averaging 74 millimeters. The species exhibits sexual dimorphism, with males generally larger than females. The bird's plumage is a combination of white, grey, and black, with the white belly and grey neck contrasting against the black back adorned with white spots and stripes. The eyes are typically yellow, though brown variations exist, and the skin around the eyes and malar stripe is pinkish.
To identify the Southern Yellow-billed Hornbill, look for the long yellow beak and modest-sized casque that covers almost the entire length of the beak in males. The bird's white belly, grey neck with spots, and black back with white markings are also distinctive. The male's larger size and longer beak are reliable indicators for sex differentiation in the field.
This hornbill species is a common and widespread resident of the dry thornveldt and broad-leafed woodlands, often seen along roads and watercourses. They show a preference for acacia and broadleaved woodlands when available.
The Southern Yellow-billed Hornbill is near-endemic to the dry savannas of southern Africa, with its range extending from Angola and Namibia in the west to Mozambique and KwaZulu-Natal in the east, including Botswana, Zimbabwe, and northern South Africa.
Active during the day, these birds are often solitary, but may form couples or small groups, especially during breeding or nesting seasons, or when local migration occurs during the dry season. They are ground foragers, not digging but rather overturning debris to find food. They are sedentary but may roam in search of sustenance during dry spells. Monogamous pairs defend their territories with elaborate displays.
The Southern Yellow-billed Hornbill's vocal repertoire includes a piercing cry, whistles, grunts, and cackles. These calls are used for territory demarcation and long-distance communication, often accompanied by physical displays.
Their diet consists mainly of arthropods like termites, beetles, larvae, grasshoppers, and caterpillars, supplemented by small mammals, berries, fruits, nuts, and eggs from other species. They use their beak as forceps to grasp and toss food into their throat, with serrated inner edges aiding in crushing and fragmenting their prey.
20-5-2019 BUMI HILLS, ZIMBABWE - ARROW MARKED BABBLER (Turdoides jardineii ssp. tamalakanei)
%2020.jpg)
The arrow-marked babbler (Turdoides jardineii) is a species of bird in the family Leiothrichidae. It is native to woodlands in the southern Afrotropics.
It is found in Angola, Botswana, Burundi, Republic of the Congo, DRC, Eswatini, Gabon, Kenya, Malawi, Mozambique, Namibia, Rwanda, South Africa, Tanzania, Uganda, Zambia, and Zimbabwe. Its natural habitats are subtropical or tropical dry forest, dry savanna, and subtropical or tropical moist shrubland.
%2021.jpg)
The arrow-marked babbler is a medium-sized babbler, 22 to 25 cm (8.7–9.8 in) in length and weighing 56 to 85 g (2.0–3.0 oz). The common name for the species is derived from its plumage, which is brownish-grey above and lighter below, with white tips to the feathers on the throat, neck and head. The outer iris is bright red and the inner bright yellow or orange. Males and females are identical in appearance. Juveniles have brown eyes and less arrow-shaped streaking on the breast.
%2022.jpg)
The arrow-marked babbler lives in social groups of between 3 and 15 birds (six being the average) that defend large territories, with the size of the territory being dependent upon the number of individuals in the group. They feed on insects, spiders and sometimes snails and lizards, as well as fruits. Foraging occurs near the ground, sometimes in association with other babblers or bulbuls.
20-5-2019 BUMI HILLS, ZIMBABWE - MEVES'S STARLING (Lamprotornis mevesii)
Meves's starling (Lamprotornis mevesii) or Meves's glossy-starling, is a species of starling in the family Sturnidae. It is found in Angola, Botswana, Malawi, Mozambique, Namibia, South Africa, Zambia, and Zimbabwe.
Its common name and Latin binomial commemorate the German ornithologist Friedrich Wilhelm Meves. A medium-large, iridescent glossy starling with a very long and graduated tail. The color of the iridescence is blue and purple in most of the range, but the southwestern Angola population shows yellowish bronzy gloss. Pairs, groups, and flocks are resident in open savanna, preferring broadleaf woodland like Brachystegia (miombo) and areas with baobabs.
The species feeds on the ground, walking with long strides, and sits low in trees, searching mostly for insects to eat. The similar Burchell’s Starling differs from Meves’s Starling by being greener and larger, with a less graduated tail that is proportionately shorter. This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence under 20,000 km² combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation).
The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (under 10,000 mature individuals with a continuing decline estimated to be over 10% in ten years or three generations, or with a specified population structure). The population trend is not known, but the population is not believed to be decreasing sufficiently rapidly to approach the thresholds under the population trend criterion (over 30% decline over ten years or three generations). For these reasons the species is evaluated as Least Concern.
21-5-2019 BUMI HILLS, ZIMBABWE - RED WINGED STARLING (Onychognathus morio)
The red-winged starling (Onychognathus morio) is a bird of the starling family Sturnidae native to eastern Africa from Ethiopia to the Cape in South Africa. An omnivorous, generalist species, it prefers cliffs and mountainous areas for nesting, and has moved into cities and towns due to similarity to its original habitat.
The male of this 27–30-centimetre (11–12 in) long starling has mainly iridescent black plumage, with chestnut flight feathers, which are particularly noticeable in flight. The female has an ash-grey head and upper breast. The juvenile resembles the male, but is less glossy than the adults, and has brown rather than dark red eyes. The Ethiopian subspecies O. m. rupellii is longer-tailed than the nominate form and intergrades with it.
This species has a number of whistled calls, but the most familiar is the contact call, cher-leeeoo.
The range runs down eastern Africa from Ethiopia to the Cape, Kwa-Zulu Natal and Gauteng in South Africa. This species has a wide habitat tolerance. It may be found in forest, savannah, grassland, wetlands, fynbos, farmlands and commercial plantations, as well as urban centres. It is now common in many urban areas, due to the similarity between the structure of tall buildings and houses as nest sites with the cliffs of its original habitat. It may also nest in residential areas, breeding in roofs and apertures and up house eaves.
1-7-2019 MONTE CORONA, VALENCIA - GRAMMODES BIFASCIATA MOTH (family Erebidae)
%2020-topaz-sharpen-upscale-1.4x.jpg)
Grammodes bifasciata is a moth species known for its distinctive dark brown forewings with lighter bands. It is found in regions including Madagascar, eastern and northern Africa, and the Mediterranean Basin. The larvae are polyphagous, feeding on plants like Cistus, Rubus, and Smilax.
Characteristics and habitat
Appearance: The adult moth has dark brown forewings that are framed by a walnut-colored area and a lighter line on the rear wing. When at rest, the wings form a characteristic triangular shape.
Size: The wingspan is approximately $30-35$mm.
Habitat: It prefers coastal and lowland areas, particularly wetlands and sandy areas, where its host plants are present.
30-6-2019 MONTE CORONA, VALENCIA - DOUBLE STRIPED PUG MOTH (Gymnoscelis rufifasciata)
%2020.jpg)
The double-striped pug (Gymnoscelis rufifasciata) is a moth of the family Geometridae. It is a widespread and common species, being found throughout the Palearctic region, including the Near East and North Africa.
This is a variable species but always easy to recognize due to the two prominent dark fascia across each forewing which give the species its common name. The forewing ground colour ranges from light to dark reddish brown. The crosslines are distinct. The inner margin of the pale white sub-marginal line bears black marks. The hindwings are pale grey with darker fringes, darker lines and a small black discal spot. There is a dark band across the basal segments of the abdomen. The wingspan is 15–19 mm.
%2021.jpg)
The caterpillars reach a length of up to 17 millimeters and have a very variable basic colouration. It ranges from whitish to yellowish green, brown, red to purple. On the back there is a pale band marked with a series of dark diamonds or triangles. The drawing resembles a rear-facing trident, is sometimes crow-foot-like and can occasionally be only weakly formed. The head is yellowish brown.
Two, sometimes three, broods are produced each year and the adults are on the wing in April and May (sometimes earlier), July and August, and sometimes later in the autumn. Later broods are more heavily marked. It flies at night and is attracted to light and flowers, both of its food plants and others.
The larva feeds on the flowers of a huge range of plants (see list below) and has also been known to feed on the larvae of other lepidoptera. The species overwinters as a pupa.
30-6-2019 MONTE CORONA, VALENCIA - MOORISH GECKO (Tarentola mauritanica)
Tarentola mauritanica, known as the common wall gecko, is a species of gecko (Gekkota) native to the western Mediterranean area of North Africa and Europe. It has been introduced to Madeira and Balearic Islands, and the Americas (in Montevideo, Buenos Aires and California). A nocturnal animal with a predominantly insectivorous diet, it is commonly observed on walls in urban environments in warm coastal areas; it can be found further inland, especially in Spain where it has a tradition of cohabitation with humans as an insect hunter.
A robust species, up to 15 centimetres (5.9 in) long, its tubercules are enlarged and give the species a spiny armoured appearance.
The species was first described by Carl Linnaeus in 1758. It is also known as moorish gecko, crocodile gecko, European common gecko, and, regionally, as osga (in Portuguese), salamanquesa (in Spanish) and dragó (in Catalan).
21-5-2019 BUMI HILLS, ZIMBABWE - VERVET MONKEY (Chlorocebus pygerythrus)
The vervet monkey (Chlorocebus pygerythrus), or simply vervet, is an Old World monkey of the family Cercopithecidae native to Africa. The term "vervet" is also used to refer to all the members of the genus Chlorocebus. The five distinct subspecies can be found mostly throughout Southern Africa, as well as some of the eastern countries. These mostly herbivorous monkeys have black faces and grey body hair color, ranging in body length from about 40 cm (16 in) for females, to about 50 cm (20 in) for males.
In addition to behavioral research on natural populations, vervet monkeys serve as a nonhuman primate model for understanding genetic and social behaviors of humans. They have been noted for having human-like characteristics, such as hypertension, anxiety, and social and dependent alcohol use. Vervets live in social groups ranging from 10 to 70 individuals, with males moving to other groups at the time of sexual maturity. Studies done on vervet monkeys involve their communication and alarm calls, specifically in regard to kin and group recognition, and particular predator sightings.
The vervet monkey ranges throughout much of Southern and East Africa, being found from Ethiopia and extreme southern South Sudan all the way down to South Africa. It is not found west of the East African Rift or the Luangwa River, where it is replaced by the closely related malbrouck (C. cynosuros) species. The vervet monkey inhabits savanna, riverine woodland, coastal forest, and mountains up to 4000 m (13,100 ft). They are adaptable and able to persist in secondary and/or highly fragmented vegetation, including cultivated areas, and sometimes are found living in both rural and urban environments. Annual home range size has been observed to be as high as 176 ha, with an average population density of 54.68 animals/km2.
Vervet monkeys that are naturalised (introduced by humans) are found in Cape Verde, Ascension Island, Saint Helena, St Kitts and Nevis, and Barbados. Dania Beach, Florida, is home to about 40 introduced vervets.
Monday, 1 July 2019
18-5-2019 BUMI HILLS, ZIMBABWE - LAUGHING DOVE (Streptopelia senegalensis)
%2020.jpg)
It is closely related to the spotted dove (Spilopelia chinensis) which is distinguished by a white and black chequered necklace. Other names include laughing turtle dove, palm dove and Senegal dove while in Asia the name little brown dove is often used.
Subscribe to:
Comments (Atom)