In a large bowl, whisk together the flour, sugar, baking powder, baking soda, and salt.
In a separate bowl, whisk together the buttermilk, milk, egg, and melted butter.
Pour the liquid mixture into the dry ingredients and stir until just combined.
Gently fold in the blueberries.
Heat a lightly oiled griddle or frying pan over medium heat.
Pour batter onto the griddle, using approximately 1/4 cup for each pancake.
Cook until bubbles form on the surface, then flip and cook until browned on the other side.
Serve hot with your favorite toppings.