Patna/ New Delhi, April 7 -- In a first-of-its-kind happenstance, two bar-headed geese tagged with solar-powered GSM-GPS transmitters in Bihar's Nagi Dam Bird Sanctuary have winged their way to the wetlands of Tibet after around a month-long journey, it was learnt.

The Bombay Natural History Society (BNHS) fixed solar-powered GPS-GSM tags (transmitters) on these two geese - Gagan and Vayu - at Nagi Dam Bird Sanctuary in Jamui district on February 22, 2025.

It was the first time the GPS-GSM technology was used to track the bar-headed geese, known to attain the highest altitude in flight for migratory bird, to track their precise movement. "The two geese will provide critical data on migration routes, stopover sites, and their behavioural...