In a large bowl, sift together the flour, baking powder, salt and sugar. Make a hole in the center and add the milk, egg, butter and orange zest. Stir until well combined and the batter is smooth. Fold in the blueberries.
Heat a skillet or frying pan over medium high heat. Grease the surface with oil or additional butter and use ¼ cup scoops when pouring the batter. Brown on both sides and serve hot with butter and maple syrup.