Tagged falcons visit India covering 33K km

NEW DELHI: Flying thousands of kilometres from their breeding grounds in northern China and eastern Mongolia, nearly a million Amur falcons, a small grey bird of prey, regularly descend across northeast India for nearly a month in October to feed and rest before continuing their journey to southern Africa.

Five Amurs were tagged with satellite transmitters last November in Manipur to identify their important migration routes in remote areas, two of them, who are now considered conservation ambassador for the locals, returned to that area in October after completing their migratory route and covering some 30,000 km.

After spending almost a fortnight in Manipur, both tagged birds headed to their further migration onto the southern parts of Africa by crossing the Arabian Sea.

"The two Amurs that are currently being tracked are named Chiulan and Irang. Chiulan is a male Amur that arrived in Somalia yesterday and Irang is a female Amur and may have also arrived in Somalia now," Suresh Kumar, one of the key researchers, told IANS on Tuesday.

He said they were captured and tagged on October 1, 2019, at Puching village, some 100 km from the state capital Imphal, in Tamenglong district.

Kumar, a senior scientist at the state-funded research institution Wildlife Institute of India, said the male Amur reached Somali after non-stop journey of 5,700 km that includes nocturnal flight.

"The bird named Chiulan reached Tamenglong on October 26 after a roundtrip of 33,000 km. After spending 15 days there, it started its non-stop onward journey on November 11," he said.

During its journey Chiulan, named after a village, crossed several Indian states. It reached Somalia on November 16 at 5.30 p.m. This journey took five days and 13 hours. It crossed over the Arabian Sea by covering a distance of 3,000 km. The Irang bird reached Manipur after a roundtrip of 29,000 km.

Two of the five transmitters installed last year have been working and airing data on their migration routes.

Kumar, who has attached satellite transmitters on 15 falcons in the last seven years, said the scientists now have a better understanding about their migratory routes. This also helps identifying their routes in remote locations.

Each transmitter with a solar-charged battery weighs less than five grams is tagged on an Amur whose weight ranges from 170 to 180 grams.

"The weight of a transmitter should be less than three per cent of the total weight of a bird. If it is slightly heavy, it will impact the natural behaviour of the bird," he explained. (IANS)

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