Radio collars for leopards in Mumbai’s Sanjay Gandhi National Park

Radio collar is a device that helps detect and understand an animal’s movement

Leopards in and around Sanjay Gandhi National Park (SGNP) will be radio collared as part of a study to understand their movement across the forest and its environs. This is the first time such a project has been planned in a forest close to a large metropolitan area .

Park authorities signed a memorandum of understanding (MoU) with Wildlife Conservation Society – India (WCS) on Friday to initiate a two year long project to fit radio collars - a device that helps detect and understand an animal’s movement - on the park’s resident leopards.

HT had reported on February 7 that SGNP officials have decided to fix radio-collars on three free-roaming leopards, both inside and outside the park premises. After Friday’s MoU confirmed the development, SGNP officials said at least three leopards will be radio collared while WCS-India members said they have received permission to collar five leopards from the state forest head office at Nagpur.

Currently, no leopard in and around SGNP have been radio-collared so far. In February this year, SGNP officers and Nikit Surve, wildlife biologist from Wildlife Conservation Society (WCS) India released the survey report that confirmed the presence of 41 leopards in and around SGNP with 27 photographed for the first time across 140 sq km area.

“This will be a first-of-its-kind project across India with an aim to understand how leopards use the landscape in and around the park. While work has been done for tigers through similar projects, it has never happened for leopards. We are extremely optimistic about the two year study but we will also be releasing preliminary reports as and when the study progresses,” said Anwar Ahmed, director and chief conservator of forest, SGNP.

“While we have received permission to collar five leopards, we will be collaring them based on feasibility. As of now three developments are needed before the study begins – funding from the Maharashtra forest department, permission from the central government to carry out the exercise since the animal is a Schedule 1 species, and permission from the Department of Telecommunications, Ministry of Communications, for the wire frequency,” said Vidya Athreya, wildlife biologist, WCS-India. “The process has just begun.”

CASE STUDY

In 2009, leopards from Ahmednagar division were collared and one of them, Ajoba (see image), walked 125 km from Malshej Ghats to Mumbai, highlighting that there exists a well-established corridor where leopards have access to 10,000 sq. km area from Mumbai Metropolitan Region all the way up till Tansa and Malshej Ghat.

Why you should care

Leopards are elusive species with highly secretive nature, and are very hard to observe. Camera trapping and collaring are two tools that allow wildlife researcher to understand the big cat. At SGNP, camera trapping activity has been going on for the last three years, and now radio collaring studies have been initiated.

During a 2017 study by WCS India, nine individual leopards were identified along peripheral areas of SGNP - Aarey Milk Colony (4), IIT-Powai (1), Film City (1), Ghodbunder village (1) and Nagla block (2).