The Economic Research Service reports a series of estimated costs and returns -- for broilers. The series was for basic whole bird carcass, ice-packed broilers. Returns were nine-city average broiler prices reported by the Agricultural Marketing Service. Costs were estimated by use of computerized formulas. In May 1983, the Agricultural Marketing Service replaced the nine-city price report with a 12-city composite price report. The new price report extends market coverage to include additional consumer areas and new product forms of broilers marketed. This report includes descriptions of the two price series and changes in cost estimation equations used for the cost-returns series to account for the product mix represented by the new price series.