In large bowl, whisk together flours, sugar, baking powder, baking soda and salt. In small bowl, beat eggs then add milk, oil and vanilla; mix well. Stir wet ingredients into dry ingredients and mix to combine.
Heat griddle or large skillet over medium heat. Using 1/4 measuring cup, pour batter onto griddle. Gently place several blueberries all over surface of pancakes.
Flip pancakes when bubbles start to form around edges and bottoms are golden brown. Cook on other side until golden brown, about 2 minutes. Remove to plate and cover to keep warm.
Top pancakes with additional blueberries and syrup before serving, if desired.