Death By NumbersTen rhinos have been killed already this year at Kaziranga, as opposed to the five all of last yearPoachers executing stealth operations, using upgraded weapons Rhino horns, known for medicinal and aphrodisiacal properties, sell at upwards of Rs 3 lakh a kg.Since there is no local market for rhino horns, they have to be sold outside. Poachers have to have international linkages at some level.***L