PSEW-PSEW-PSEW-PSEW-PSEW-PSEW-PSEW Retired ornithologist Dan Casey looked through the trees on the eastern edge of the Flathead Waterfowl Production Area, waiting for something to flit among the branches in response to his call. PSEW-PSEW-PSEW-PSEW-PSEW-PSEW-PSEW “They usually respond well to this call,” Casey said. “It’s like a generic frequency or alarm call.” […]