A wetland surrounded by a chicken farm and a water pump A chicken farm with 30,000 birds with an environmental permit is being built in the "Oya Tosca" wetland in Mazandaran. At the same time, knowledgeable sources say that water harvesting for fishing and fish farming has greatly lowered the lagoon's water level. The chicken farm project has progressed by about 80%, but Mazandaran's environmental officials have yet to respond to questions regarding its location and monitoring of water withdrawal. The fatwa | news | Sports 7.