In a spectacular annual phenomenon, thousands of migratory birds, ranging from the bar-headed geese to egrets, have descended upon the Gharana Wetland Conservation Reserve near the International Border in Jammu.The wetland, located approximately 35 kilometres from Jammu, has become a 'haven for bird enthusiasts' as over 6,000-bar-headed geese and various other species from the northern hemisphere migrate to the region during winter annually. Hundreds of people, mostly students and photography enthusiasts, throng the wetland during the winter to have a glimpse of the migratory birds.