A hunter accused of fatally shooting his neighbor after mistaking her for a deer was arraigned on a charge of second-degree manslaughter on Thursday in a western New York court.

The hunter, Thomas B. Jadlowski, 34, was also charged with hunting after legal hours in the Nov. 22 death of Rosemary Billquist. Ms. Billquist, 43, had been walking her dogs in a field near her home when she was struck in the hip by a bullet fired by Mr. Jadlowski, officials said.

In announcing the charges, which carry a potential prison sentence of five to 15 years, the authorities in Chautauqua County — about 65 miles southwest of Buffalo — reiterated that they had no reason to believe that Mr. Jadlowski had intended to harm Ms. Billquist.

Still, the Chautauqua County district attorney, Patrick Swanson, said at a Thursday news conference that the shooting — which garnered national attention last month — had shaken the small town of Sherman, where Mr. Jadlowski and Ms. Billquist grew up before becoming casual acquaintances.