01 - Preheat oven to 350°F and line a 12-cup muffin tin with paper liners.
02 - Whisk together the flour, cocoa powder, baking powder, and salt in a mixing bowl until evenly blended.
03 - Using an electric mixer, beat the softened butter and granulated sugar until pale and fluffy. Add one egg at a time, mixing thoroughly after each addition. Incorporate vanilla extract.
04 - Alternately add the dry ingredients and whole milk to the creamed mixture, starting and ending with the dry ingredients. Mix just until combined; avoid overmixing.
05 - Distribute the batter evenly among the prepared muffin cups. Bake for 18 to 20 minutes, or until a toothpick inserted in the center comes out clean. Cool completely on a wire rack.
06 - Beat softened butter until creamy. Gradually add powdered sugar, cocoa powder, milk, and vanilla extract, blending until the frosting is light and fluffy.
07 - Apply a generous layer of chocolate buttercream to each cooled cupcake, using a piping bag or an offset spatula.
08 - Position 5 to 6 colorful candy-coated chocolates along the back edge of each cupcake to form feathers.
09 - Place two candy eyes near the center of each cupcake. Add one orange or yellow candy-coated chocolate below the eyes as the beak.
10 - Draw a wattle beside the beak using red decorating gel. Sprinkle chocolate sprinkles for additional texture if desired.