HOMING AND EFFECTS OF NON-NATIVE STOCK TREATMENT HOMING ABILITY Pure native stock 86% Pure non-native stock 22% Hybrid 46% Source: Robert Bams, 1976 "... the degree of within river homing in all hatchery-raised fish was strongly associated with frequency of inherited local genes." Note:The local, native stock of pink salmon had a high homing ability while the non-native stock did not. The native, non-native cross exhibited an intermediate ability to home.