Experts say a mix of prolonged drought, receding water levels, and growing habitat degradation is driving away seasonal birds Water inflow from River Indus has been completely stopped over past 8 years Lake is also home to largest crocodile population in Pakistan KARACHI, Pakistan Surrounded by marshes and brackish seepage lagoons, Haleji Lake was once the favorite destination of migratory birds that flew thousands of miles from Siberia to enjoy Pakistan's warm waters in harsh winters. Located