Bhubaneswar, Jan 16, 2008 : Lakhs of migratory birds have homed in at Asia's largest inland salt-water lagoon Chilka Lake in Bhubaneshwar due to the favourable brackish waters and improved eco system, which in turn has also lent a boost to tourism. With the arrival of more than seven lakh species of migratory birds, a record-breaking figure will be achieved this year. The forest department is taking measures to step up security to protect these winged creatures against poachers.