Olive Ridley Turtle Hatchlings Released to Sea

Seven species of turtles are found in the warm waters of seas in the temperate-tropical zone. Of these five species make a visit to the Indian coast annually for laying of eggs and rearing. They nest all along the Indian coastline of Bay of Bengal in the east and Arabian sea in the west. Of these Olive Ridley Turtles (Lepidochelys olivacea) outnumber all others in numbers in visiting the Indian shore. Eastern coast is having larger nesting areas. Gahirmatha and Rishikulya in Odisha are globally recognized massive nesting sites.   

When it comes to the western coast of India, massive nesting sites are not reported. Only few sites are known where egg laying is very sporadic and moderate. In Kerala,  only very few  turtles are making the annual trip for laying of eggs. Neeleswaram beach in Kasaragod, Kozhavippalam in Kozhikkode, Chavakkad beach in Guruvayur in Thrissur, Kuzhippilli and Cherai beaches in Ernakulam, Thottappali beach in Alappuzha, Chiillikkal, Pozhikkara and Mukkam beaches in Kollam and Vizhinjam beach in Thiruvananthapuram are the major landing sites for these turtles in Kerala. As per an established pattern, northern Kerala shores receive the highest number of turtles, while their number decreases as one travels to the south.

First butterfly to be discovered and described by an all Indian research team from the Western Ghats.

A new taxon of Lycaenid butterfly belonging to the Nacaduba genus has been discovered by researchers from the Western Ghats. This adds a new species to the butterfly fauna of India as well as that of the Western Ghats and Kerala state as well. The common name of the butterfly is suggested as Ramaswami’s Six Lineblue and ‘Ceylon Varayanneeli’. The discovery was done by a team of four researchers, namely, Dr. Kalesh Sadasivan and Baiju. K from Travancore Nature History Society (TNHS) Trivandrum, Rahul Khot from Bombay Natural History Society, Bombay and Ramasamy Naicker from Vanam, Theni. 

         Line blues are small butterflies belonging to the subfamily Lycaenidae with Indo-Australian. Their distribution ranges from India and Sri Lanka to the whole of south-eastern Asia, Australia, and Samoa. They are characterised by hairy eyes, anastomosis of veins 11 and 12 on forewings, male wings

‘Punarjani’, conservation project for Olive Ridley Turtles making great strides.

Shri K.B.Sanjayan, Co-ordinator of T.N.H.S
highlighting the importance of protecting turtles

         ‘Punarjani’, a novel project conceived by the Social Forestry wing of the Department of Forests and Wildlife, Kollam, in association with Travancore Nature History Society (TNHS), a Trivandrum-based N.G.O working in the field of nature conservation, was originally launched on January 23, 2020, at Chillakkal beach, Paravur near Kollam. The project envisages protecting Olive Ridley turtles, a reptile that has been placed in the Red Data Book of International Union for Conservation of Nature (IUCN). Olive Ridley turtles have been laying eggs on the shores of Chillakkal and Pozhikkara beaches on the Kollam coast, notably because these are the only two gaps without a seawall erected as a measure against sea erosion. These turtles freely crawl to the shore in the safety of the nightfall in these places, dig pits in the sand some of which as large as to hold up to 100 of its eggs. In course of three weeks when the eggs hatch, hatchlings are led back to the sea by themselves as if by a rare force of intuition. Parental care is sparsely observed in these varieties of turtles.

House Sparrow Population in the City Shows a Mixed Pattern

Travancore Nature History Society (TNHS), the city-based NGO, striving to protect the environment and create awareness for up-keeping the rich bio-diversity of the southern Western Ghats and its penumbral regions, has been engaged in monitoring the House Sparrow (Passer domesticus) population in and around Thiruvananthapuram city, ever since March 20 has come to be observed as World Sparrow Day (WSD) in 2010. This year also, during the run up to the Day, members of the Society scouted the nook and corner of the city, noting down the numbers of the birds. It was heartening to note that there was a marginal increase in the number of sparrows in certain pockets of the city, while the number remained steady in the remaining habitats or has gone down nominally. Sparrow count was taken at all known sparrow hubs like Connemara market, Bheemapalli,  Vettucaud, Vizhinjam etc. 

Faunal survey adds new birds and butterflies to Shendurney

Lesser Fish Eagle 

A 4-day annual faunal survey of Shendurney Wildlife Sanctuary jointly conducted by Kerala Forest Department and Travancore Nature History Society (TNHS), concluded here with interesting finds. Faunal survey adds 6 new birds and 3 new butterflies to Shendurney. The 171 sq km sanctuary was covered by 10 teams of experts using basecamps in all elevations and habitats. The exercise was a part of the annual faunal assessment, which targets census of Butterflies, Birds, Odonates, spiders and mammals of the sanctuary. In addition, the teams also listed reptiles, amphibians and ants. The programme started with a meeting at Thenmalai where the participants were briefed about the survey. The meeting was inaugurated by the Wildlife Warden Mr Sajeev Kumar B, Mr Saju M Asst Wildlife Warden delivered the introductory speech and Dr. Kalesh Sadasivan explained the methodology and logistics to the delegates. Around 40 delegates from south India participated in the event, which included experts on various faunal groups from Travancore Nature History Society TNHS, Bangalore Butterfly Club (BBC), and students from various research institutes and colleges.

NATURALISTS REDISCOVER OF TWO RARE DRAGONFLIES FROM WESTERN GHATS

 

Martin’s Duskhawker (Anaciaeschna martini)

    Dragonflies & Damselflies belong to the group called Odonates. These insects are prime ecological indicators. Serious study of Odonates of the Western Ghats has gained momentum only recently, to be precise since the early part of the last decade.  Apart from the scientific community, citizen science initiatives are also now on to identify and conserve these little-known fauna of our region. Thus, it was on the Odonates of Western Ghats Facebook group discussion between Dr. Kalesh Sadasivan, an avid naturalist from the Travancore Nature History Society (TNHS), Trivandrum, Kerala and Manoj Sethumadhavan from the Wynter-Blyth Association (WBA), The Nilgiris,  the surprising fact that one species which was described in 1922 had not been sighted in south India ever since has sprung to light.  The last record of the three species was by F.C. Fraser in 1933 from Anamalai Hills and another described in 1958 was sighted in Agasthyamalais and Kakkayam.

House Sparrow Population in the City Shows a Chequered Pattern

Travancore Nature History Society (TNHS), the city-based NGO, striving to protect the environment  and create an awareness for up-keeping the rich bio-diversity of southern Western Ghats and its penumbral regions, has been engaged in taking counts of the House Sparrow (Passer domesticus) seen in and around Thiruvananthapuram city, ever since March 20 has come to be observed as World Sparrow Day (WSD) in 2010. This year also, during the run up to the Day, members of the Society scouted the nook and corner of the city, noting down the numbers of the birds. A general trend observed in 2020 was a marginal to significant fall in the number of sparrows over last couple of years in known sparrow hubs like Connemara market, Chalai and Vettucaud regions. Whereas in pockets such as Sulaiman Street and Beemapallly,  there were sharp increase in its numbers.

Munnar Survey adds 13 new Birds and 7 new Butterflies to the high-range landscape

A scientific survey of the Munnar Wildlife Division conducted last week came out with interesting results. A total of 13 new bird records and 8 new butterflies were recorded for the landscape. These include those species that were not recorded previously in the Management Plans of the regions National Parks and Sanctuaries. The 4-day exercise was conducted by the Munnar Wildlife Division in association with the Travancore Nature History Society (TNHS), Trivandrum.

About 100 volunteers participated in the survey done in all the Protected areas of the Munnar Landscape, namely Eravikulam National Park, Mathikettan Shola National Park, Anamudi Shola National Park, Chinnar Wildlife Sanctuary, Kurinjimala Sanctuary and Pampadum Shola National Park.