The team, comprising of birdwatchers from Bengaluru, Chennai, and Thiruvananthapuram had sighted the new species in March this year at Mugaphi peak in Changlang district.The sighting was a chance one as team members along with two guides from Arunachal Pradesh had reached the area in search of the rare and elusive grey bellied wren babblers, which are found mostly in Myanmar and in smaller numbers in China and Thailand.