Tuesday, 31 July 2018
17-4-2018 CHOBE RIVER, BOTSWANA - AFRICAN PIED KINGFISHER (Ceryle rudis ssp rudis)
The pied kingfisher (Ceryle rudis) is a striking water kingfisher, known for its black and white plumage and distinctive crest. It is a medium-sized bird, approximately 25 cm in length, with a white face featuring a black mask and a white supercilium. The male is characterized by a double band across the breast, while the female sports a single, often broken, breast band.
When identifying the pied kingfisher, look for its unique black and white barred pattern and prominent crest. The male's double breast band and the female's single broken band are key differentiators between the sexes. The subspecies vary slightly in size and coloration, with some having larger bills or reduced white in their plumage.
This kingfisher is commonly found perched along the edges of clear lakes and rivers, where it can easily spot and dive for fish.
The pied kingfisher is widely distributed across sub-Saharan Africa and southern Asia, from Turkey to India and China. It is a resident species, with most populations not engaging in long migrations.
The pied kingfisher is often seen bobbing its head and flicking its tail while perched. It is a sociable bird, known to form large roosts at night. Its flight is direct and rapid, sometimes reaching speeds close to 50 km/h.
This species is quite vocal, emitting sharp "chirruk chirruk" notes that contribute to its presence being easily detected.
Breeding season for the pied kingfisher typically occurs from February to April in India. They nest in holes excavated in vertical mud banks above water. The nests are tunnel-like, leading to a chamber where a clutch of three to six white eggs is laid. Cooperative breeding is observed in this species, with non-breeding offspring from previous broods assisting in raising the young.
Monday, 30 July 2018
24-4-2018 JOHANNESBURG, SOUTH AFRICA - SPECKLED MOUSEBIRD (Colius striatus ssp. striatus)
The Speckled Mousebird, Colius striatus, stands as the largest of its kind, reaching a length of about 35 cm, half of which is attributed to its elongated tail. This bird tips the scales at a modest 57 grams. Its plumage is a muted mousy brown, complemented by a pronounced crest atop its head. The upper bill is cloaked in black, while the lower bill exhibits a soft pink hue.
Distinguishing features of the Speckled Mousebird include its crest and the dual-toned bill. Variations among subspecies manifest in head contrast, throat color, barring extent, and iris hue. The White-headed Mousebird may appear similar, but the Speckled Mousebird's distinct bill colors and absence of a bare grey orbital patch set it apart.
The Speckled Mousebird thrives in a variety of settings, from savannas to open woodlands, and even in urban gardens and orchards. It tends to avoid rainforests and deserts, favoring open bushveld and areas with dense thickets.
This species has a broad range, from Cameroon across to Eritrea and Ethiopia, and southward to the southernmost tip of Africa. It is a common sight across Tanzania and is well-adapted to both wild and urban environments.
Social by nature, Speckled Mousebirds are often seen in groups, partaking in communal feeding and mutual preening. They exhibit a unique behavior of dust bathing on the ground and may ingest pebbles to aid in digestion. At dusk, they roost closely together, sometimes entering a state of torpor to conserve energy, relying on their numbers for protection against predators.
While not celebrated for melodious singing, the Speckled Mousebird is nonetheless vocal. It emits a warbling 'tsu-tsu' in flight and a 'tisk-tisk' alarm call when threatened.
Breeding can occur year-round, with nests being a collaborative effort between males and females. These nests are rather large and disheveled, made from various materials. Clutch sizes vary, averaging 3-4 eggs, with both parents and previous offspring participating in rearing. Incubation lasts about two weeks, and fledglings venture out at around 17-18 days, becoming independent after a month.
As a frugivore, the Speckled Mousebird's diet consists primarily of fruits, berries, leaves, seeds, and nectar. It exhibits regional preferences in its diet, selecting food sources specific to its habitat.
The IUCN Red List categorizes the Speckled Mousebird as Least Concern, indicating a stable population without significant threats to its survival.
30-7-2018 VILLALONGA RESERVOIR, VALENCIA - APPLE MINT (Mentha suaveolens)
A variant of apple mint, pineapple mint, displays white variegation on its leaves, Pierce County, Washington
Mentha suaveolens, the apple mint, pineapple mint, woolly mint or round-leafed mint (synonyms M. rotundifolia, Mentha macrostachya, Mentha insularis),[1][2] is a member of the mint family Lamiaceae. It is native to southern and western Europe including the Mediterranean region. It is a herbaceous, upright perennial plant that is most commonly grown as a culinary herb or for ground cover.
Apple mint typically grows to a height of from 40 to 100 centimetres (16 to 39 in) tall and spreads by stolons to form clonal colonies. The foliage is light green, with the opposite, wrinkled, sessile leaves being oblong to nearly ovate, 3 to 5 cm (1.2 to 2.0 in) long and 2 to 4 cm (0.8 to 1.6 in) broad. They are somewhat hairy on top and downy underneath with serrated edges. The flowers develop in terminal spikes 4 to 9 cm (1.6 to 3.5 in) long and consisting of a number of whorls of white or pinkish flowers. Apple mint flowers in mid to late summer. The plant is aromatic with a fruity, minty flavour.
30-7-2018 VILLALONGA RESERVOIR, VALENCIA - NOMAD DRAGONFLY (FEMALE) (Sympetrum fonscolombii)
The red-veined darter or nomad (Sympetrum fonscolombii) is a dragonfly of the genus Sympetrum.
There is genetic and behavioural evidence that S. fonscolombii is not closely related to the other members of the genus Sympetrum and it will at some time in the future be removed from this genus.
Sympetrum fonscolombii was named under the protonym Libellula fonscolombii by the Belgian entomologist Edmond de Sélys Longchamps, in 1840, in honor of the French entomologist Étienne of Fonscolombe (hence the species name).[4] Its name is sometimes spelt fonscolombei instead of fonscolombii but Askew (2004) gives the latter as the correct spelling.
Sympetrum fonscolombii is a widespread and common species in much of central and southern Europe including most Mediterranean islands, North Africa, the Middle East, Mongolia, south-western Asia, including the Indian Subcontinent, the Indian Ocean Islands and Sri Lanka. In Europe it is resident in the south of its range but in some years it migrates northward. From the 1990s onwards has increasingly been found in northwest Europe, including Belgium, Sweden, Finland, Poland, Britain and Ireland. It is the only Libellulidae to be found in the Azores and it is also found on the Canary Islands and Madeira.
24-4-2018 JOHANNESBURG, SOUTH AFRICA - SOUTHERN FISCAL SHRIKE (lanius collaris)
The Southern Fiscal (Lanius collaris), is a striking bird of the shrike family, prevalent throughout much of southern Africa. It is colloquially referred to as the 'jackie hangman' or 'butcher bird', a nod to its unique habit of impaling its prey on acacia thorns, a larder for future feasting. This bird was once considered conspecific with the Northern Fiscal, Lanius humeralis, under the collective title of the Common Fiscal.
Adult Southern Fiscals measure between 21 to 23 centimeters in length. They exhibit a bold dichromatic plumage with crisp white underparts contrasting sharply against their sleek black upperparts. A distinctive white "V" marks their back, and their long black tail is adorned with white outer feathers and white tips. Both sexes possess a black bill, eyes, and legs, with the female distinguished by her rufous lower flanks.
The Southern Fiscal is an adaptable species, inhabiting a variety of environments from grasslands adorned with fences suitable for perching, to acacia thornveld and even woodlands. It tends to avoid overly dense areas that would hinder its hunting prowess.
Sunday, 29 July 2018
24-4-2018 JOHANNESBURG, SOUTH AFRICA - SOUTHERN RED BISHOP (FEMALE) (Euplectes orix)
The Southern Red Bishop (Euplectes orix) is a vibrant, small passerine bird, a member of the weaver family Ploceidae. It is known for its striking sexual dimorphism, with breeding males adorned in a fiery red and black plumage, while females and non-breeding males display a more subdued, streaky brown appearance.
Breeding males are unmistakable with their rich red and black coloration. They have a black face, throat, and belly, with the rest of the body a brilliant red, except for the brown wings and tail. Females and non-breeding males are paler and streaked brown, with the females being slightly smaller in size. The species is characterized by a thick conical bill, ideal for seed consumption.
The Southern Red Bishop thrives in wetlands and grasslands within Africa south of the Equator. It has a preference for areas near water, such as reeds and sedges, and can also be found in agricultural landscapes like sugar cane fields.
This species is widely distributed across the southern and eastern regions of Africa, ranging from South Africa to Angola, and extending to parts of the Democratic Republic of Congo, Zambia, Uganda, Nigeria, and Kenya. It avoids arid zones such as the Namib Desert and Kalahari.
The Southern Red Bishop is a sociable bird, often seen in flocks and nesting in colonies. It is polygynous, with males courting multiple females by constructing several nests and performing elaborate display flights. Its diet consists mainly of seeds, supplemented by insects.
The male's song is a distinctive buzzing sound, while the species also emits various twittering calls and a nasal contact call, facilitating communication within flocks.
During the breeding season, males exhibit their prowess by building multiple nests to attract females and engaging in fluffed-up feather displays. The nests are typically woven among reeds using grasses and other plant materials. Females lay two to four eggs per clutch.
The Southern Red Bishop feeds predominantly on seeds, with a partiality for grass seeds. It also consumes insects, particularly during the breeding season when additional protein is beneficial.
24-4-2018 JOHANNESBURG, SOUTH AFRICA - BRIGHT CAPE SPARROW (Passer melanurus ssp. vicinus)
The Cape sparrow, or 'mossie' as it is affectionately known, is a medium-sized bird measuring 14–16 centimeters in length. It boasts a distinctive plumage with large pale head stripes present in both sexes. The male is particularly striking with bold black and white markings on its head and neck, while the female is somewhat duller with a grey head. The plumage across both sexes is a blend of grey, brown, and chestnut hues.
When identifying the Cape sparrow, look for the male's black head with a broad white mark curling from behind the eye to the throat, and a narrow black band connecting the black bib of the breast to the black of the head. The female, though less vivid, shares a similar pattern but with a grey head. Juveniles resemble females, but young males begin to show black head markings early on.
The Cape sparrow is found in semi-arid savannah, cultivated areas, and urban environments. It has adapted well to human settlements and agriculture, often seen in parks, gardens, and other open spaces within towns.
This species ranges from the central coast of Angola through Namibia, Botswana, southern Zimbabwe, and into eastern South Africa and Eswatini. It is less common in the driest parts of the Namib Desert and the wet forests of Limpopo and KwaZulu Natal.
Cape sparrows are highly social, forming large nomadic flocks when not breeding. They typically breed in colonies and exhibit a unique social behaviour in Johannesburg, where groups stand closely together in an unexplained ritual.
The calls of the Cape sparrow are more musical and mellow than those of the house sparrow. The basic call, used in flight and while perching socially, can be transcribed as 'chissip' or 'chirrup'. Males have a loud call to advertise nest ownership, written as 'tweeng' or 'twileeng', which can extend into a repetitive song.
Breeding usually occurs in colonies, with the nest constructed in a variety of sites including trees, bushes, cavities, or even disused nests of other species. Clutches typically contain three or four eggs, with both parents involved in the breeding process from nest building to feeding the young.
Primarily seed-eaters, Cape sparrows forage in trees and on the ground, favoring larger seeds of cereals and wild grasses. They also consume buds, soft fruits, and insects, particularly when feeding nestlings.
Saturday, 28 July 2018
21-4-2018 OKAVANGO DELTA, BOTSWANA - AFRICAN LION (FEMALE) (Panthera leo)
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.
20-4-2018 OKAVANGO DELTA, BOTSWANA - STRIPED KINGFISHER (Halcyon chelicuti)
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The Striped Kingfisher, known scientifically as Halcyon chelicuti, is a member of the tree kingfisher subfamily. It is a small, robust bird, with a general length ranging from 16 to 18 cm. The upper parts of the adult are predominantly greyish brown, while the lower back, secondary flight feathers, and tail boast a striking metallic blue, which is particularly visible in flight. The underparts are off-white, with varying degrees of buff and brown streaking across the subspecies.
When perched, the Striped Kingfisher may appear rather inconspicuous, but its flight reveals a white patch at the base of the primary flight feathers and a black border along the wing linings. Males can be identified by a black bar at the base of the primaries. The head is streaked dark brown, with a buffy grey or brownish background depending on the sex. A black line runs through the eyes and around the back of the neck, sitting above a white collar. The bill is blackish above and reddish-orange below, with the lower mandible being dull red in juveniles.
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The Striped Kingfisher favors woodlands, thorn scrub, dry bush, and open savannas, but it tends to avoid densely forested areas, intensive farmlands, and extreme deserts.
This species is found throughout Sub-Saharan Africa, with two subspecies: H. c. chelicuti occupying most of the range, and H. c. eremogiton residing in the northern desert regions from central Mali to eastern Sudan.
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Highly territorial, the Striped Kingfisher defends an area that may encompass up to three hectares and contain around 100 tall trees. It is known to chase away intruders, including other kingfishers, shrikes, doves, and rollers. The bird surveys its territory from a treetop, singing from before dawn until after midday.
The call of the Striped Kingfisher is a high-pitched, piercing "cheer-cherrrrrr" or a far-carrying "KEW, kerrrrrrrrr," with the latter featuring a descending trill. This call is often part of a dusk display involving wing-opening.
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Breeding pairs engage in a display of sitting opposite each other, flicking their wings while singing. They nest in disused woodpecker or barbet holes, with both sexes incubating by day and only the female by night. The male feeds the female during this period. The species is mainly monogamous, though instances of polyandry have been observed.
The northern subspecies, H. c. eremogiton, can be distinguished by its grey-brown crown and mantle and almost unstreaked underparts.
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The diet primarily consists of grasshoppers, other large insects, and occasionally small lizards, snakes, and rodents. The Striped Kingfisher hunts from a perch, swooping down to capture prey, which is then beaten before being swallowed.
With an extensive range estimated at 13 million square kilometers and a large population, the Striped Kingfisher is classified as Least Concern on the IUCN Red List. There is no indication of significant population decline to warrant a higher threat category.
Friday, 27 July 2018
27-7-2018 MONTE CORONA, VALENCIA - AGAVE SNOUT WEEVIL (LARVAE) (Scyphophorus acupunctatus)
Scyphophorus acupunctatus, the sisal weevil or agave weevil, is a species of polyphaga beetle of the family of the Curculionidae. Sisal weevil larvae, known as picudo del agave or "nixtamal worms", are a traditional food in parts of Mexico. Global plant trade represents one of the main pathways of introduction for invertebrates, including insects, throughout the world. Non-native insects include some of the most important pests affecting cultivated and ornamental plants worldwide. Defining the origins and updating the distribution of non-native invasive species is pivotal to develop effective strategies to limit their spread.
The agave weevil, Scyphophorus acupunctatus (Coleoptera, Dryophthoridae), is a curculionid beetle native to Central and North America, although it also occurs in Eurasia, Africa, Oceania and South America as a non-native species. Despite being widespread, the extent of occurrence and origins of European populations of the agave weevil have been overlooked. In the present study, the current and potential worldwide distribution of S. acupunctatus was assessed and an analysis of its genetic diversity in the native and non-native ranges was performed. By analysing occurrences from local phytosanitary bulletins and citizen-science platforms, the agave weevil was confirmed to be widely distributed and to occur on all continents, except Antarctica. Additionally, there is potential for expansion throughout the world, as estimated by species distribution models.
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