DEHRADUN : A large congregation of migratory birds has been spotted in the marshy and clear water areas of the lush Terai region of Kumaon in Uttarakhand, much to the delight of avid bird watchers. Himanshu Bagri, the Divisional forest officer of Eastern Terai, told TNIE, “Every year during the winter, these migratory birds travel approximately 6,000 to 10,000 kilometres …