Eighty-seven percent of 281 Mississippi catfish farmers felt that fish-eating birds were enough of a problem to warrant harassment. Farmers estimated that they spent an average of 2.6 man-hours per day harassing birds at an average annual cost of 7400.Sixtypercentofthefarmerswhoharassedbirdsdidsobydrivingaroundthepondsandfiringatbirdstorepelthem.Propaneexplodersandpyrotechnicswerealsoused.Pyrotechnicswerejudgedthemosteffectiverepellenttechnique.Thecostofbirdharassmentaccordingtothesefarmersis2.1 million. The value of fish loss to cormorants alone is roughly estimated at 3.3million.Thetotalannuallosstobirdsisestimatedat5.4 million