Conservation drones for Nilgiri tahr count

K.S. Sudhi



The Wildlife Institute of India, Dehradun, is drawing up a plan to introduce the unmanned aircraft for population estimation and tracking the movement of the endangered mountain goats. The drones will be equipped with high-resolution mapping cameras that can click pictures for a pre-set period. The images can be stitched to obtain a picture series of the animals, K. Ramesh, scientist at the institute, said.
This will be the first time that the drones are engaged in the State for conservation of wildlife. Researchers expect to fly the drones over the park in three months.
The drones will be introduced in 10 bio-geographic zones in the country, including the Sundarbans and the Himalayas. Three of the four drones will be deployed in the Western Ghats region. The population estimation of the tahr using conservation drones will replace the more than a quarter-century-old ‘block count’ method.
The habitat of the animals is divided into 13 blocks, and the population is estimated based on direct sightings. In this method, the same animals can be sighted by different groups leading to duplication of data, P.O. Nameer, a wildlife expert, said. Conservation drones would help in arriving at scientific population figures for the animals, he said. The tahr population at Eravikulam is estimated to be 870.
Mohan Alampat, former wildlife warden of the park, said the present technique of the tahr count could be affected by poor weather conditions that may hamper the visual search of animals. Conservation drones would evolve as the preferred tool for census in areas like Eravikulam in another five years.
 

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