Saturday, 28 March 2020
Friday, 27 March 2020
2-3-2020 KANJA NAT PARK, INDIA - SAMBAR (FEMALE) (Rusa unicolor)
The sambar (Rusa unicolor) is a large deer native to the Indian subcontinent and Southeast Asia. The name "sambar" is also sometimes used to refer to the Philippine deer called the "Philippine sambar", and the Javan rusa called the "Sunda sambar".
Sambar deer are light brown or dark with a grayish or yellowish tinge. The underparts are paler. Old sambars turn very dark brown, almost the color black. Their coat of dark short hair is coarse, and their undersides have creamy white to light brown hair. The color of the coat is usually consistent around the body, but it can vary from almost dark gray to yellowish-brown.
Males have unique stout, rugged antlers with three points, or tines. Their tail is quite long for deer, generally black on top and dirty white or whitish underneath. Sambars have long, strong legs, the upper color being dark brown, with the inner parts of the legs a paler or dirty white. Their brownish-gray ears are long. Adult males and pregnant or lactating females possess an unusual hairless, blood-red spot located about halfway down the underside of their throats. This sometimes oozes a white liquid and is apparently glandular in nature.
Sambar deer are native in India, Pakistan, Ceylon, Sri Lanka, Burma, the Philippines, southern China, Taiwan, Borneo, Malaysia, Sumatra, and Java. They inhabit both the gentle slopes and the steeper parts of forested hillsides. Sambar prefer to live in tropical dry forests, open scrub, tropical seasonal forests, subtropical mixed forests with stands of conifers and montane grasslands, broadleaved deciduous and broadleaved evergreen trees, to tropical rainforests, and seldom move far from water sources. These deer can also be found near cultivated areas like gardens and plantations, where they can find food.
2-3-2020 KANJA NAT PARK, INDIA - COMMON CROW BUTTERFLY (Euploea core)
Euploea core, also known as the common crow, is a common butterfly found in South Asia to Australia. In India it is also sometimes referred to as the common Indian crow, and in Australia as the Australian crow. It belongs to the crows and tigers subfamily Danainae (tribe Danaini).
E. core is a glossy-black, medium-sized 85–95 mm (3.3–3.7 in) butterfly with rows of white spots on the margins of its wings. E. core is a slow, steady flier. Due to its unpalatability it is usually observed gliding through the air with a minimum of effort. As caterpillars, this species sequesters toxins from its food plant which are passed on from larva to pupa to the adult. While feeding, it is a very bold butterfly, taking a long time at each bunch of flowers. It can also be found mud-puddling with others of its species and often in mixed groups. The males of this species visit plants like Crotalaria and Heliotropium to replenish pheromone stocks which are used to attract a female during courtship.
The common crow is the most common representative of its genus, Euploea. Like the tigers (genus Danaus), the crows are inedible and thus mimicked by other Indian butterflies (see Batesian mimicry). In addition, the Indian species of the genus Euploea show another kind of mimicry, Müllerian mimicry. Accordingly, this species has been studied in greater detail than other members of its genus in India.
Thursday, 26 March 2020
26-3-2020 MONTE CORONA, VALENCIA - CATALONIA WALL LIZARD (Podarcis liolepis)
Podarcis liolepis, the Columbretes wall lizard or Catalan wall lizard, is very similar to the other lizards in the genus Podarcis. This species was formerly described as a subspecies of the Iberian wall lizard, but has now been elevated to species status. These are slender lizards with long tails, narrow tapered heads and long thin toes, and stout legs. Colours are variable, although generally grey-brown. Often very subtle spots and stripes along the back and flanks can be seen and these can be more distinguished in the female. The underside is a much lighter cream or beige with sometimes a reddish tint. Adults grow 15–20 cm in length from the nose to tip of the tail. Body length can be a little as one third of the total body length, the tail making up the other two thirds.
Physical characteristics Size: Adults grow to about \(15-20\) cm long, with the tail making up two-thirds of the total length.Body shape: They are slender with a long tail, a narrow head, and long, thin toes.Color: Dorsal colors are typically grey-brown with varied patterns. Females tend to have more prominent longitudinal stripes, while males are often smaller. Some individuals also have ventral color variations, including yellow, orange/red, and white morphs.
Habitat and behavior Habitat: The species is adaptable and can be found in various environments, including rocky areas, shrubby vegetation, and even human settlements.Distribution: Its range extends from the Rhône Valley in France to the Sierra Nevada in Spain.
Activity: They are diurnal and active, often seen basking, foraging, and hiding in vegetation.Diet: They feed on small invertebrates and sometimes fruit.Reproduction: As an oviparous (egg-laying) species, females lay an average of 2.80 eggs per clutch in continental populations.
2-3-2020 KANJA NAT PARK, INDIA - ORANGE HEADED THRUSH (Geokichla citrina)
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The Orange-headed Thrush (Geokichla citrina) is a bird of striking plumage, with the male sporting a vivid orange head and underparts contrasted against uniform grey upperparts. Females and juveniles are more subdued, with browner upper parts and a less vibrant orange hue.
Adult males are distinguished by their entirely orange head and underparts, and grey upperparts. Females and juveniles are similar but have browner or more olive upperparts. The species is characterized by a distinctive underwing pattern with a strong white band, aiding in identification.
This species thrives in well-wooded areas, showing a preference for shady, damp environments. It can be found in moist broadleaved evergreen woodlands with medium-density undergrowth, as well as bamboo forests and secondary growth.
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The Orange-headed Thrush is a common resident across the Indian Subcontinent and Southeast Asia, extending to southern China. Some subspecies are migratory, wintering at lower altitudes within the region.
Typically solitary or in pairs, the Orange-headed Thrush is a shy and secretive bird. It is more easily observed than other thrushes in its genus, especially when foraging for food on the forest floor at dawn and dusk.
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The vocal repertoire includes a soft "chuk" or "tchuk," a screeching "teer-teer-teer," and a thin "tsee" or "dzef" in flight. Its song is a melodious series of sweet notes, often incorporating imitations of other bird species.
Nests are built by both sexes, comprising a shallow cup of twigs and leaves, situated in trees or bushes. The species lays cream or pale-tinted eggs with lilac blotches and reddish-brown spots, which are incubated for about two weeks.
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An omnivorous bird, the Orange-headed Thrush consumes a variety of insects, earthworms, and fruit. It is particularly active at dawn and dusk, foraging in the leaf litter for food.
Classified as Least Concern, the Orange-headed Thrush has a large population size and extensive range. However, it faces threats from trapping for the cage-bird trade in some areas, and habitat loss in Southeast Asia.
2-3-2020 KANJA NAT PARK, INDIA - BENGAL SACRED LANGUR MONKEY (Semnopithecus entellus)
The northern plains gray langur (Semnopithecus entellus), also known as the sacred langur, Bengal sacred langur and Hanuman langur, is a species of primate in the family Cercopithecidae.
The northern plains gray langur belongs to the genus Semnopithecus along with the other Indian langurs. The southern plains gray langur was once classified as a subspecies of S. entellus, i.e., S. entellus dussumieri and later regarded as a separate species, i.e., S. dussumieri, but is now regarded as an invalid taxon. Most of the specimens that had been regarded as Semnopithecus dussumieri fall within the revised range of Semnopithecus entellus.
The fur of adults is mostly light colored, with darker fur on the back and limbs, and the face, ears, hands and feet are all black. Infants are brown. Body size excluding tail ranges from 45.1 cm (17.8 in) to 78.4 cm (30.9 in) long, and the tail length is between 80.3 cm (31.6 in) and 111.8 cm (44.0 in). Adult males weigh between 16.9 kg (37 lb) and 19.5 kg (43 lb) while adult females weigh between 9.5 kg (21 lb) and 16.1 kg (35 lb).
The range of the northern plains gray langur covers a large portion of India south of the Himalayas south to the Tapti River and the Krishna River. They have also been reported from Tharparkar in Pakistan. It is thought to have been introduced to western Bangladesh by Hindu pilgrims on the bank of the Jalangi River.
The northern plains gray langur is diurnal, and is both terrestrial and arboreal. Its natural habitats are subtropical or tropical dry forests and subtropical or tropical dry shrubland. Females groom members of both sexes but males do not groom others.
The northern plains gray langur can live in several different types of groups. It can live in groups of multiple males and females, one male and multiple females or multiple males with no females, and males can also live alone without a group. Single male groups are most common. Group size can exceed 100 monkeys. Upon reaching maturity, males typically emigrate from their natal group while females typically remain. Young adult females are typically dominant over older females. When a new male takes over a group it may engage in infanticide of young fathered by the previous male or males, but this is less common when the takeover occurs slowly over several months.
The northern plains gray langur eats primarily fruits and leaves. It is able to survive on mature leaves, which is a key to its ability to survive throughout the dry season. It also eats seeds, flowers, buds, bark and insects, including caterpillars. It is also fed fruits and vegetables by humans, and some groups get a substantial portion of their diets from food provided by temples and from raiding crops.
Groups that have access to abundant food year-round, for example those that are provisioned by temples or are able to raid crops year-round, also breed throughout the year. Other groups, such as those living in forests, typically give birth between December and May. The gestation period is about 200 days. Females other than the mother alloparent the infant for the first month of its life. Weaning occurs at about 1 year and males reach maturity at about 6 to 7 year old.
The northern plains gray langur often associates with chital deer. Both species respond to each other's alarm calls. The chital seem to benefit from the vigilance of male langurs watching for predators in the trees, while the langurs seem to benefit from the chital's better senses of smell and hearing. It also has been observed engaging in grooming sessions with rhesus macaques.
2-3-2020 KANJA NAT PARK, INDIA - INDIAN ROLLER (Coracias benghalensis)
The Indian roller (Coracias benghalensis) is a bird of the family Coraciidae. It is 30–34 cm (12–13 in) long with a wingspan of 65–74 cm (26–29 in) and weighs 166–176 g (5.9–6.2 oz). The face and throat are pinkish, the head and back are brown, with blue on the rump and contrasting light and dark blue on the wings and tail. The bright blue markings on the wing are prominent in flight. The sexes are similar in appearance. Two subspecies are recognised.
The Indian roller occurs widely from West Asia to the Indian subcontinent. Often found perched on roadside trees and wires, it is common in open grassland and scrub forest habitats, and has adapted well to human-modified landscapes. It mainly feeds on insects, especially beetles. The species is best known for the aerobatic displays of males during the breeding season. Adult males and females form pair bonds and raise the young together. The female lays 3–5 eggs in a cavity or crevice, which is lined with a thin mat of straw or feathers. The roller is the state bird of three Indian states. It is listed as a species of least concern on the IUCN Red List.
The Indian roller is a bulky and broad-winged bird with a large head and short neck and legs. It has a body length of 30–34 cm (12–13 in) with a wingspan of 65–74 cm (26–29 in) and weighs 166–176 g (5.9–6.2 oz). The bare skin around the eyes is dull orange, the legs and feet are yellow-brown. The bill is tinged with brown at the base. The iris is grey-brown.
The plumage on the forehead, chin and lores are pinkish buff, the ear coverts are darker red-brown with pale cream or pinkish streaks, while the throat is a dull wine-red with narrow cream streaks. The crown and nape are a darker dull turquoise. The back and rump are a bright turquoise, and the belly is pale blue. The tail coverts are dark purple-blue with turquoise tips. The middle two tail feathers are greyish blue-olive with black shafts, while the surrounding tail feathers are an intense purple-blue with a broad pale blue band and greenish tinge towards the tips. The flight feathers on the wings have the same purple-blue colour of those on the tail, with a similar pale blue band across the most distal five or six primaries. The underwing coverts and axillary feathers are pale blue, while the upperwing coverts are a dull green-blue. The primary coverts are pale blue with olive or purple-blue tips, and the lesser coverts are purple-blue along the leading edge of the wing. The colours look dull when the bird is perched but become vibrant in flight. Moulting commences anywhere from mid-June to mid-August and concludes between November and the beginning of March.
Scan of Indian roller feathers: a primary, two outer secondaries and two tail feathers
The blue colours of the flight feathers are structural and are formed by microstructures in the barbs that produce blue through scattering, which C.V. Raman noted in the 1930s as being more complex than can be explained by the Tyndall effect. Studies in 2010 found the feather barbs structured like a channel with β-keratin rods 100 nm (3.9×10−6 in) in diameter with airspaces between them.
Adult males and females are similar in appearance and there are no seasonal changes. Juvenile birds are duller, paler and browner in colour, with a dull green crown and dull green-blue belly tinged with buff. The bill is brown with a yellowish base rather than black.
The Indian roller is distributed from Iraq and United Arab Emirates through the Indian subcontinent, including Sri Lanka. In Pakistan, it is resident in the wetlands around Chotiari Dam in Sindh, in Jiwani Coastal Wetland in Balochistan, and in Punjab along the Taunsa Barrage and Chenab River. It has been recorded as a summer visitor to Jalalabad in northeastern Afghanistan. It has been recorded as a vagrant in Syria,Saudi Arabia, Masirah Island, Qatar, Yemen, Socotra, Bahrain, where it was sighted in 1996 and in 2008, Lakshadweep islands, the Maldive Islands, and Turkey. In Kuwait, it is a common winter visitor at Green Island and farmlands near Al Jahra. In the 1970s, it was reported as a common winter visitor to the marshes and mudflats of Shadegan County in Iran. However, it is listed as resident in Iran.
The species is common, and often found in open woodland dominated by trees of the genera Acacia and Prosopis, and has adapted well to human-modified landscapes such as parks and gardens, fields, date and coconut palm plantations. It has been nicknamed "roundabout bird" in northern Oman, where pairs live in vegetation at roundabouts. In Oman, it is common in the Al Batinah Region and in cultivated areas east of the Sharqiya Sands below elevations of 1,000 m (3,300 ft). In India, it was sighted at elevations ranging from sea level in the Bhitarkanika Mangroves and the Gulf of Mannar to about 2,100 m (6,900 ft) in the Nilgiri Mountains.
The Indian roller is generally not very gregarious and is usually found alone or in pairs. It is often territorial, though migrants may forage in flocks with no aggression. They patrol their territory by flying at treetop height or three-stories high and when an intruder is spotted, they drive it away by a fast rolling flight. Its migration patterns are not well understood; in Oman they are present year-round but appear to be more common in winter than summer.
The Indian roller spends a few minutes preening followed by flying around its roosting site. It favours electric or telegraph wires as perches. It has been observed perching in trees and shrubs at a height of 3–9 m (10–30 ft) from where it flies down to forage for ground insects. It also uses higher perches in the upper canopy of trees. The display of the Indian roller is aerobatic with twists and turns. It is attracted by wildfires and darts into hot smoke in pursuit of insects. It has been observed following tractors for disturbed invertebrates. In agricultural habitats in southern India, it has been found at densities of about 50 birds per km2.
Nesting Indian rollers act aggressively towards potential predators. They drive away Indian jungle crows (Corvus culminatus) from nests and have even been recorded repeatedly divebombing an Egyptian vulture (Neophron percnopterus), and flying at humans.
Haemoproteus coraciae live inside the red-blood cells and Leucocytozoon blood parasites have been recorded in the lung tissues. Parasitic helminth worms Hadjelia srivastavai, Cyrnea graphophasiani, Habronema thapari and Synhimantus spiralis have been recorded from the gizzards of Indian rollers.
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