Monday, 23 March 2020
8-3-2020 THATTEKAD, INDIA - BRONZED DRONGO (Dicrurus aeneus)
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The bronzed drongo (Dicrurus aeneus) is a small Indomalayan bird belonging to the drongo group. They are resident in the forests of the Indian subcontinent and Southeast Asia. They capture insects flying in the shade of the forest canopy by making aerial sallies from their perches. They are very similar to the other drongos of the region but are somewhat smaller and compact with differences in the fork depth and the patterns of gloss on their feathers.
This drongo is somewhat smaller than the black drongo and has more metallic gloss with a spangled appearance on the head, neck and breast. The lores are velvety and the ear coverts are duller. The tail is slender and well forked with the outer tail feathers flaring outward slightly. Immatures have their axillaries tipped in white. The young bird is duller and brownish with less spangling.
The nominate race is found in India and extending until the northern part of the Malay Peninsula. Specimens from southern India are however very similar in morphometrics to those from malayensis of Burma and the size variation may be clinal. The subspecies from China kwangsiensis is treated as synonymous with aeneus. Subspecies malayensis is found from Selangor south into, Sumatra and Borneo. Taiwan is home to braunianus in the mountains of the interior.
9-3-2020 PERIYAR RIVER LODGE, INDIA - RED WHISKERED BULBUL (Pycnonotus jocosus)
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The red-whiskered bulbul (Pycnonotus jocosus), or crested bulbul, is a passerine bird native to Asia. It is a member of the bulbul family. It is a resident frugivore found mainly in tropical Asia. It has been introduced in many tropical areas of the world where populations have established themselves. It has a loud three or four note call, feeds on fruits and small insects and perches conspicuously on trees. It is common in hill forests and urban gardens.
The red-whiskered bulbul is about 20 centimetres (7.9 in) in length. It has brown upper-parts and whitish underparts with buff flanks and a dark spur running onto the breast at shoulder level. It has a tall pointed black crest, red face patch and thin black moustachial line. The tail is long and brown with white terminal feather tips, but the vent area is red. Juveniles lack the red patch behind the eye, and the vent area is rufous-orange.[citation needed]
An albino red-whiskered bulbul has also been recorded.
Sunday, 22 March 2020
9-3-2020 PERIYAR RIVER LODGE, INDIA - PIED PADDY SKIMMER DRAGONFLY (Neurothemis tullia)
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Neurothemis tullia, the pied paddy skimmer, is a species of dragonfly found in south and south-east Asia. It appears in Bangladesh, China, Hong Kong, India, Malaysia (Peninsular Malaysia), Myanmar, Nepal, Sri Lanka, Taiwan, Thailand, Cambodia and Viet Nam.
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It is a black dragonfly with a pale yellow mid-dorsal carina of thorax. Wings are hyaline for apical half and opaque steely blue-black for basal half which is bordered by a milky white patch towards the tip. Females differ remarkably from the males both in body-colouring and markings and in marking of the wings. Its body is greenish yellow with a bright yellow mid-dorsal carina of thorax. Base of wings are amber yellow followed by a blackish brown patch. Apices of all wings are broadly opaque blackish brown and the remaining halves are pale yellow.
It breeds in marshes, well vegetated ponds, lakes and rice fields. It perches very close to ground and its flight is very weak.
9-3-2020 PERIYAR RIVER LODGE, INDIA - MALABAR GREY HORNBILL (Ocyceros griseus)
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The Malabar gray hornbill (Ocyceros griseus) is a hornbill endemic to the Western Ghats and associated hills of southern India. They have a large beak but lack the casque that is prominent in some other hornbill species. They are found mainly in dense forest and around rubber, arecanut or coffee plantations. They move around in pairs or small groups, feeding on figs and other forest fruits. Their loud cackling and laughing call makes them familiar to people living in the region.
The Malabar grey hornbill is a large bird, but at 45 to 58 cm (18 to 23 in) in length it is still the smallest of the Asian hornbills. It has a 23 cm (9.1 in) tail and pale or yellowish to orange bill. Males have a reddish bill with a yellow tip, while the females have a plain yellow bill with black at the base of the lower mandible and a black stripe along the culmen. They show a broad whitish superciliary band above the eye, running down to the neck. They fly with a strong flap and glide flight and hop around heavily on the outer branches of large fruiting trees. They have brown-grey wings, a white carpal patch and black primary flight feathers tipped with white. The Indian grey hornbill, which is found mainly on the adjoining plains, is easily told apart by its prominent casque, and in flight by the white trailing edge of the entire wing. The Malabar grey hornbill has a grey back and a cinnamon vent. The long tail is blackish with a white tip, and the underparts are grey with white streaks. The long curved bill has no casque. Immature birds have browner upperparts and a yellow bill. Young birds have a dull white or yellow iris.
Their loud calls are distinctive and include "hysterical cackling", "laughing" and "screeching" calls.
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The species is endemic to the Western Ghats mountain range of India from about Nashik in the north to the southernmost hills. The species has an elevational distribution range from about 50 m near the coast (e.g., Phansad Wildlife Sanctuary, Maharashtra) to around 1,500 m in the mountains. In the southern Western Ghats, Malabar Grey Hornbills were reported in evergreen forests between 500 m and 900 m (sporadically to 1,100 m) elevation in Kalakad – Mundanthurai Tiger Reserve, but frequently up to 1,200 m in the Anamalai Hills further north. In both these sites, the estimated Malabar Grey Hornbill density decreased with elevation, with the population density in rainforest fragments in the Anamalai Hills being additionally positively related to food tree species richness. The species is found mainly in dense forest habitats; the thinner dry forest habitat of the plains is typically occupied by the Indian grey hornbill. The Sri Lanka grey hornbill was included with this species in the past, but is now considered distinct.
This hornbill is found in small groups mainly in habitats with good tree cover. Being large frugivores, they are important as seed dispersal agents for many species of fruit bearing forest trees. They also feed on small vertebrates and in captivity they will readily take meat.
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The breeding season is January to May. Being secondary cavity nesters (incapable of excavating their own nests), they find trees with large cavities. A study in the Anaimalai Hills showed that the species preferred nest sites that had large trees. The nest holes were usually found in large trees with hollows caused by heart-rot, where a branch had broken off. Trees of the species Lagerstroemia microcarpa, Terminalia bellirica and Terminalia crenulata were found to hold nearly 70% of all the nests in the Mudumalai area. The species is monogamous, and the same nest sites are used by the pair year after year. The female incarcerates herself within the cavity by sealing its entrance with a cement made from her droppings. The female then lays three or sometimes four white eggs and begins a complete moult of her flight feathers. The entrance to the nest retains a narrow aperture through which the female voids excreta and receives food from the male. The male brings all the food needed for the female and the young. Berries, insects, small rodents and reptiles are included in the diet. Males tap the tree to beckon the female on arriving with food. Berries are regurgitated one at a time and shifted to the tip of the bill before being passed to the female.
9-3-2020 THATTEKAD BIRD SANCTUARY, INDIA - GREAT HORNBILL (Buceros bicornis)
The great hornbill is native to the forests of India, Bhutan, Nepal, mainland Southeast Asia and Sumatra. Its distribution is fragmented in the Western Ghats and in the foothills of the Himalayas. Deforestation has reduced its range in many parts of India such as in the Kolli hills where it was recorded in the 1860s.
It prefers dense old growth unlogged forests in hilly regions. It appears to be dependent on large stretches of rain forests.
In Thailand, the home range of males was found to be about 3.7 km (2.3 mi) during the breeding season and about 14.7 km (9.1 mi) during the non-breeding season. Molecular approaches to the study of its population diversity have been attempted.
Great hornbills are usually seen in small parties, with larger groups sometimes aggregating at fruit trees. A congregation of 150 to 200 birds has been recorded in southeastern Bhutan. In the wild, the great hornbill's diet consists mainly of fruit. Figs are particularly important as a food source. Vitex altissima has been noted as another important food source. Great hornbills also forage on lipid-rich fruits of the families Lauraceae and Myristicaceae such as Persea, Alseodaphne and Myristica. They obtain water entirely from their diet of fruits. They are important dispersers of many forest tree species. They will also eat small mammals, birds, small reptiles and insects. Lion-tailed macaques have been seen to forage alongside these hornbills.
They forage along branches, moving along by hopping, looking for insects, nestling birds and small lizards, tearing up bark and examining them. Prey are caught, tossed in the air and swallowed. A rare squirrel, the Travancore flying squirrel (Petinomys fuscocapillus) has been eaten, and Indian scops owl (Otus bakkamoena), jungle owlet (Glaucidium radiatum) and Sri Lanka green pigeon (Treron pompadora) have been taken as prey in the Western Ghats.
9-3-2020 PERIYAR RIVER LODGE, INDIA - ORIENTAL MAGPIE ROBIN (Copsychus saularis)
This species is 19 centimetres (7.5 in) long, including the long tail, which is usually held cocked upright when hopping on the ground. When they are singing a song the tail is normal like other birds. It is similar in shape to the smaller European robin, but is longer-tailed. The male has black upperparts, head and throat apart from a white shoulder patch. The underparts and the sides of the long tail are white. Females are greyish black above and greyish white under. Young birds have scaly brown upperparts and head.
The nominate race is found on the Indian subcontinent and the females of this race are the palest. The females of the Andaman Islands race andamanensis are darker, heavier-billed and shorter-tailed. The Sri Lankan race ceylonensis (formerly included with the peninsular Indian populations south of the Kaveri River) and southern nominate individuals have the females nearly identical to the males in shade. The eastern populations, the ones in Bangladesh and Bhutan, have more black on the tail and were formerly named erimelas. The populations in Myanmar (Burma) and further south are named as the race musicus. A number of other races have been named across the range, including prosthopellus (Hong Kong), nesiotes, zacnecus, nesiarchus, masculus, pagiensis, javensis, problematicus, amoenus, adamsi, pluto, deuteronymus and mindanensis. However, many of these are not well-marked and the status of some of them is disputed. Some, like mindanensis, have now been usually recognized as full species (the Philippine magpie-robin). There is more geographic variation in the plumage of females than in that of the males.
It is mostly seen close to the ground, hopping along branches or foraging in leaf-litter on the ground with a cocked tail. Males sing loudly from the top of trees or other high perches during the breeding season.
Saturday, 21 March 2020
8-3-2020 PERIYAR RIVER LODGE, INDIA - ORIENTAL MAGPIE ROBIN (Copsychus saularis)
This magpie-robin is a resident breeder in tropical southern Asia from Nepal, Bangladesh, India, Sri Lanka and eastern Pakistan, eastern Indonesia, Thailand, south China, Malaysia, and Singapore.
The Oriental magpie-robin is found in open woodland and cultivated areas often close to human habitations.
Magpie-robins breed mainly from March to July in India and January to June in south-east Asia. Males sing from high perches during courtship. The display of the male involves puffing up the feathers, raising the bill, fanning the tail and strutting. They nest in tree hollows or niches in walls or building, often adopting nest boxes. They line the cavity with grass. The female is involved in most of the nest building, which happens about a week before the eggs are laid. Four or five eggs are laid at intervals of 24 hours and these are oval and usually pale blue green with brownish speckles that match the color of hay. The eggs are incubated by the female alone for 8 to 14 days. The nests are said to have a characteristic odour.
Females spend more effort on feeding the young than males. Males are quite aggressive in the breeding season and will defend their territory. They respond to the singing of intruders and even their reflections. Males spend more time on nest defense. Studies of the bird song show dialects with neighbours varying in their songs. The calls of many other species may be imitated as part of their song. This may indicate that birds disperse and are not philopatric. Females may sing briefly in the presence of a male. Apart from their song, they use a range of calls including territorial calls, emergence and roosting calls, threat calls, submissive calls, begging calls and distress calls. The typical mobbing calls is a harsh hissing krshhh.
8-3-2020 PERIYAR RIVER LODGE, INDIA - ASIAN HOUSE GECKO (Hemidactylus frenatus)
The common house gecko (Hemidactylus frenatus) is a gecko native to South and Southeast Asia as well as Near Oceania. It is also known as the Asian house gecko, Pacific house gecko, wall gecko, house lizard, tiktiki, chipkal] or moon lizard.
Most geckos are nocturnal, hiding during the day and foraging for insects at night. They can be seen climbing walls of houses and other buildings in search of insects attracted to porch lights, and are immediately recognisable by their characteristic chirping.
They grow to a length of between 7.5–15 cm (3–6 in), and live for about 7 years. These small geckos are non-venomous and not harmful to humans. Most medium-sized to large geckos are docile, but may bite if distressed, which can pierce skin. The common house gecko is tropical, and thrives in warm, humid areas where it can crawl around on rotting wood in search of the insects it eats, as well as within urban landscapes in warm climates. The animal is very adaptable and may prey on insects and spiders, displacing other gecko species which are less robust or behaviourally aggressive. In parts of Australia and Papua New Guinea they are often confused with a similar native lizard, the dubious dtella.
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