first_img © 2017 Phys.org (Phys.org)—A team of researchers affiliated with several institutions in South Africa has found that African penguins sometimes work together to corral fish to allow for more efficient foraging. In their paper published in the journal Royal Society Open Science, the group describes how they studied the birds, what they found and why they believe the penguins might go extinct if something does not change soon. Citation: African penguins found to work together to corral fish for foraging (2017, September 29) retrieved 18 August 2019 from https://phys.org/news/2017-09-african-penguins-corral-fish-foraging.html Credit: CC0 Public Domain Emperor penguins use sea ice to rest between long foraging periods Journal information: Royal Society Open Sciencecenter_img Explore further More information: Alistair M. McInnes et al. Group foraging increases foraging efficiency in a piscivorous diver, the African penguin, Royal Society Open Science (2017). DOI: 10.1098/rsos.170918AbstractMarine piscivores have evolved a variety of morphological and behavioural adaptations, including group foraging, to optimize foraging efficiency when targeting shoaling fish. For penguins that are known to associate at sea and feed on these prey resources, there is nonetheless a lack of empirical evidence to support improved foraging efficiency when foraging with conspecifics. We examined the hunting strategies and foraging performance of breeding African penguins equipped with animal-borne video recorders. Individuals pursued both solitary as well as schooling pelagic fish, and demonstrated independent as well as group foraging behaviour. The most profitable foraging involved herding of fish schools upwards during the ascent phase of a dive where most catches constituted depolarized fish. Catch-per-unit-effort was significantly improved when targeting fish schools as opposed to single fish, especially when foraging in groups. In contrast to more generalist penguin species, African penguins appear to have evolved specialist hunting strategies closely linked to their primary reliance on schooling pelagic fish. The specialist nature of the observed hunting strategies further limits the survival potential of this species if Allee effects reduce group size-related foraging efficiency. This is likely to be exacerbated by diminishing fish stocks due to resource competition and environmental change. African penguins live off the southern coast of Africa. Like other penguins, they survive by eating small fish—in this cased, their diet is generally sardines and anchovies. But the African penguins have also been found to engage in a fishing behavior that has never been seen in penguins before—group coordinated foraging.Noting that the African penguin population has been dwindling due to diminished ocean fisheries over the past several decades, the researchers decided to take a closer look at their feeding habits. They affixed miniature cameras to the backs of 12 of the birds and used the data to create video for review. In all, the team amassed 14 hours of video, which revealed a lot about the life of the penguins.In addition to footage showing the penguins preening, there was also evidence of how they fished. The researchers report that the birds did their foraging alone approximately 66 percent of the time—the other 33 percent of the time, they worked together as a cohesive unit to usher fish into columns and then into balls. Dolphins have been seen doing the same on many occasions, but this was the first time it has been seen in penguins. Corralling the fish into a ball allows for easier foraging. In watching the video footage, researchers were able to compare the efficiency of fishing alone versus fishing with a group, and found that when the birds fished together, they were more than twice as efficient. The team also found evidence of the birds communicating prior to collaborative foraging, suggesting they planned their assault on their prey.The researchers note that the population of African penguins has dropped from 4 or 5 million two centuries ago to just 50,000 today, which possibly explains why they coordinate their foraging so seldom despite the near guarantee of more food—there are not always enough of them around to form a large enough group. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.last_img read more

first_imgThe Bangladesh High Commission celebrated Bangladesh at the Indian Habitat Centre in the Capital from Thursday to Friday. The numerous people who filled the stein auditorium experienced not only one form of expression but many. Together, at the same time, we were all a part of poetry, music, dance, drama, recitation, expressions and Tagore! The Commission had gathered a rather gifted troupe from Shadhona, led by prominent dance proponent, Lubna Mariam from Dhaka showcasing the brilliance of the Bengali performing traditions from Bangladesh for the evenings! Also Read – ‘Playing Jojo was emotionally exhausting’The first day of the event saw From Finite to Infinite: The Spirit of Bangladesh. From Finite to Infinite, or Atma theke Paramatrna, was a presentation of the mystic musical- dancing traditions of Bangladesh which inherently believe that the finite body has the potential to realize the infinite creative principle through earthly practices. Through centuries these practices have empowered the common man to think beyond the normative confines of sectarian beliefs. The performances, including Buddhist Charya, Vaishnava Manipuri, Brahrro and Baul, give a historical perspective of the traditions, through music and dance; while reflecting the essence of the spirit of Bangladesh. Also Read – Leslie doing new comedy special with NetflixOn the second day we had Towards Light or Alor pane praner chawla. It is a geeti-nritya alekhya, or presentation through words and movements, that describes the, almost, indescribable journey of our prana, or life force, towards the illuminating light of gyaan or knowledge. It was based on excerpts of songs and poems by Rabindranath Tagore, who himself was continuously journeying towards enlightenment. Lubna Marium — aesthete, danseuse, dance pioneer, teacher, choreographer and impresario is a pioneering figure in the contemporary South Asian cultural scenario. Daughter of illustrious parents Colonel Quazi Nooruzzaman and Professor Sultana Zaman, Lubna Marium has dedicated a lifetime to the promotion of culture, particularly dance and other performing arts. She is the director of Shadhona — a center for promotion of South Asian performing arts, and principal of Kalpataru — a school of dance, music and arts in Dhaka.  Shadhona has done some pioneering work in reviving almost extinct dance/martial arts forms – Lathi Khela and Charya dance. Lubna Marium in an interview says, ‘at Shadhona, we have been working on a folk-narrative, and needed movements that better express the narrative. That started me off on a search for indigenous dance forms. I was astonished to find, in Bangladesh, some beautiful performing traditions which included vibrant dance forms – Padmar Nachon, Lathikhela, Jari. We couldn’t just learn these traditions and ignore the practitioners who have nurtured and preserved them with almost no patronage. Thus the ‘Robi Cholo Lathi Kheli’ project started. Similarly, we are working on a Buddhist narrative, which incorporates the ancient “Charyapada” lyrics. Again, I went a-searching and found Charya Nritya – a tantric dance which has its own set of hand-gestures. This led me to researching into the origins of our language of hand-movements. In fact, my interest is in the entire gamut of work dealing with the body-mind connection, on which practices like ‘yoga’ are based.’ Bangladesh of course gave its best! And let’s say, Delhi welcomed Bangladesh with warm hearts.last_img read more

first_imgExhibiting the graphic prints from the collection of National Gallery of Modern Art (NGMA), a show titled Celebrating Indigenous Printmaking is being organised in the Capital. The exhibition that opens on 18 September at National Gallery of Modern Art, Jaipur House, will be inaugurated by Shripad Naik, Hon’ble Minister of State for Culture & Tourism (Independent Charge) in the presence of Ravindra Singh, Secretary, Ministry of Culture, and Government of India.  Also Read – ‘Playing Jojo was emotionally exhausting’NGMA aims to acquire and preserve works of modern art from 1850s onwards. It organises exhibitions not only in its own premises but also in other parts of the country and abroad. NGMA also organises lectures, seminars and conference to encourage higher studies and research in the field of art history, art criticism, art appreciation, museology and the inter-relations on visual and performing arts.It is responsible to ensure quality and maintain the standards of excellence. It helps people to look at the works of modern art with joy, understanding and knowledge by extending their relationship with our daily life and experiencing them as vital expressions of the human spirit.last_img read more

first_imgKolkata: Mayor Sovan Chatterjee on Friday made it clear before the Alipore Court that he would stick to his decision of divorce. Both Chatterjee and his wife Ratna appeared before the Alipore Court hearing in the case of a divorce petition that was filed by the Mayor last year.Sources at the court said the judge tried his best to mend matters, however, Chatterjee stuck to his stand of seeking divorce. It is, however, not for the first time that Chatterjee had said he wants to part her ways with her wife. Also Read – Heavy rain hits traffic, flightsIt is learnt that Chatterjee told the judge that he has been financially cornered by his wife and does not want any sort of amicability with his wife. Ratna Chatterjee started shedding tears at the adamant attitude of her husband and left the court room weeping as the hearing ended.The Mayor was supposed to appear before the court on April 26 but he skipped attendance citing his poor health condition.Mayor Sovan Chatterjee on April 20 had lodged a complaint with Kolkata Police Commissioner Rajeev Kumar claiming that the officer-in-charge of Parnasree police station is allegedly threatening his security men and is taking side of his wife Ratna Chatterjee. Chatterjee in his complaint letter to Kumar on Thursday alleged that some private security personnel, whom he had appointed to guard his assets and documents at his ancestral property in Parnasree, have been threatened by Ratna Chatterjee in connivance with the local police officials.last_img read more

first_imgDhoomimal Gallery is showcasing the art works and archival material by F.N. Souza curated by Vinod Bharadwaj and Brij Sharma. As the name says Souza – City of Women, you will see the most popular artworks of nude women. His artworks are provocative and he does so like no other Indian artist does. There is nothing genteel about his works. He is totally uninhibited yet so endearing and so full of candor, grace and originality. That’s the common thread whether one is contemplating his life, his art or his writings. Thus, to understand the sexuality, mystery, eroticism and beauty of Souza’s women one needs to have wide-open eyes, not a narrow and puritan mind.  Also Read – ‘Playing Jojo was emotionally exhausting’People may seem to think erotica was founded by Hugh Hefner and that the Playboy magazine is the oldest of its forms, but if we go back hundreds of thousands of years, we would find erotica is as natural an emotion or element of nature as depicted in the sculptures and carvings of Khajurao and many other examples of gods and goddesses in erotic forms have actually been part of Indian history. Then why today we have such suppression.The idea of an evolved society is to have the capability of thinking, even discussing and then channelizing the thoughts.  Also Read – Leslie doing new comedy special with NetflixLetters written by Souza are not easy to come by, though he was a prolific correspondent. Vinod Bhardwaj had perhaps the finest set of them where Souza commented freely in his now-dismissive-now-sarcastic style about the work of his contemporaries offering cogent arguments to support his beliefs. Francis Newton Souza’s work is the strongest among all equals. Souza is the face of Indian Contemporary Art internationally. From landscapes to nudes, still life to strong heads, Souza’s done it all.When: On till April 30Where: Dhoomilal Art Gallery, CPlast_img read more

first_imgA collaborative production inspired by the stories, struggles, dreams and hopes of a motley group of teenagers titled Walk! was staged at Studio Safdar on May 22 – 23. The show was born out of a four month intensive arts-for-social-change curriculum, in which 12 teenagers, cutting across barriers of caste, class, gender, religion, and nationality, came together to teach each other about the social issues that affect them most deeply as well as the changes they dream of.  Also Read – ‘Playing Jojo was emotionally exhausting’Walk! was based on the lives and stories of the cast members; while no one plays their own part, the stories are all true. Facilitated by Tasawwur, a collective of artistes and educators, the show brought together song, choreography, tableaus, and stories to take the audience through the world these young people inhabit and the more inclusive world that they dream of.Tasawwur was started by Delhi based poet and educator, Aditi Rao. Tasawwur brings together a diverse group of teenagers to explore and transform some of the most complex social issues they grapple with. Using creative writing and performing arts to support these young people on their explorations, Tasawwur helps them discover their unique voices and stories, while creating an atmosphere of care and respect for the voices and stories of others, and ultimately using their collective voice to effect positive change in the world.last_img read more

first_img“His power came from some great reservoir of spiritual life else it could not have been so universal and so potent, but the majesty and beauty of the language with which he clothed it were all his own.” — Claude Bragdon. The musical play titled Paighamber staged at India Habitat Centre is inspired by the classic The Prophet, written by Dr Kahlil Gibran. The plays revolves around the character Anannt, portrayed by Harsh Mayar. The entire act was divided into many chapters dealing with love, marriage, children, joy and sorrow, buying and selling, crime and punishment, reason and passion, pain, good and evil, beauty, religion, and death. Also Read – ‘Playing Jojo was emotionally exhausting’Our life is made of five elements — earth, water, fire, air and ether, each having its own character. The play begins with the birth of a human life Anannt, created out of these five elements. In the play, Anannt discusses his life with these elements, portrayed by a group of people.  Also Read – Leslie doing new comedy special with NetflixThe play depicts the various moments in his life when he met Paighamber and how Paighmaber guided and enlightened Anannt with his advice which led him grow up as a better human being. Tom Alter playing the role of Paighamber and Amit Behl in roles of Khalil Gibran, the narrator, showcased their characters with finesse. It was later divulged that the grown up-bright-witted Annant is none other than Dr Kahlil Gibran and the Paighamber who guided him at various aspects of life was his own subconscious. On the musical note, the play incorporates the rich folk music of Chhattisgarh and Haryana and the famous Karma dance form of Chhattisgarh. The manifestation of Khalil Gibran’s famous novel was never less than a life where his believes always regarded humanity.last_img read more

first_imgDarjeeling: People’s Liberation Army joined in the revelries as the Indian Army commemorated the 72nd Independence Day at Nathula, the Indo-China border in Sikkim.To mark the occasion, a Special Border Meeting between India and China was held on Wednesday.This is being seen as a reciprocating gesture as the Indian Army had taken part in the celebrations commemorating the foundation day of the People’s Liberation Army on August 1, 2018.”The celebrations took place in an atmosphere of warmth and friendship with an aim of enhancing mutual trust and promoting peace and tranquility in the border areas,” stated a release from the army.Pleasantries were also exchanged in Kongra La in North Sikkim. Indian Army troops deployed in remote and high altitude areas in North Sikkim hoisted the tricolor in different forward posts to mark the occasion.”Such interactions between the two armies have resulted in enhancement of goodwill and mutual understanding between the two nations,” added the release.last_img read more

first_imgIndia has approached the US to help identify Night Vision Devices (NVD) believed to be meant for American and NATO forces recovered from inflitrating terrorists after recent encounters in J&K. Four NVDs as well as a couple of sophisticated binoculars were recovered at four places after the Army had eliminated infiltrating terrorists, official sources said.Information regarding recoveries was shared by the central security agencies with their US counterparts, who have promised help in the probe. The NVDs, recovered from near the Line of Control in North Kashmir after encounters, were dismantled to ascertain the serial numbers on the lens which were forwarded to the US authorities. Also Read – Punjab on alert after release of excess water from Bhakra damA similar NVD was found during the July 27 Gurdaspur terror attack. The NVD with US government marking was used by the terrorists as telescope fitted on an assault rifle to help them identify their targets in dead of the night.Seven persons, including a Superintendent of Police, were killed by the three terrorists before they were neutralised by Punjab Police. Upon an inquiry by India, the US had confirmed the NVD belonged to the US army which it had lost in Afghanistan in 2010.Barring its closest NATO allies, the US does not sell these NVDs to any other country. It is believed that military equipment lost by its soldiers in Afghanistan and Iraq are often sold in the open market, including through e-commerce websites.last_img read more

first_imgSometimes we can’t let go of memories because they are constant reminders of a great time that we never expect to end. Durga Puja is undoubtedly one of those kinds. In my childhood, my father never encouraged us to buy new clothes during Pujo and instead, he insisted us to buy as and when required. It was austerity, the no.1 indulgence that my father used to believe in. But we were very much pampered by my grandmother and it was great fun to go out for Pujo shopping with her. She was in her 70s with a broken leg but full of life and energy and she used to accompany us in our maternal uncle’s minibus for pandal hopping in and around the city. And still, I just can’t seem to forget the way we used to savour the delicacies of Kolkata, mainly streetfood, as it was strictly prohibited at home. Those were the most amazing days for sure. Also Read – Rain batters Kolkata, cripples normal lifeI truly believe that for any Bengali the amazement and excitement for Durga Pujo is something eternal. It brings a happy festive atmosphere all over. It is just not an event that brings the city of Kolkata to a halt but is a festival that unites people. During the time of Partition of Bengal in 1905, Rabindranath Tagore rightly portrayed the harmony amongst all religions during Durga Puja and I must say, it’s still pretty much the same.The textile industry of Kolkata plays a significant role in the economy of Bengal. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedI met the proprietor of Saha Textile, Kanti Saha, years back in Barasat where I was looking for a textile store. Our bond strengthened over the years. When the beautiful showroom was inaugurated at Hindustan Park, my joy knew no bound as I was aware of its popularity and of course the much-desired proximity.Saha, a true connoisseur of art and culture with his innovative work and business module, has acquired a different place in Bengal’s textile industry. He has made Barasat as the unique centre for his praiseworthy activities, which I am extremely proud of. Restoration and revival of tradition and culture in the field of textile has always been his aspiration. I have witnessed that Puja shopping at his shop is fun and I really look forward to those times.last_img read more