Preheat oven to 375 degrees F. Line cupcake pan with liners.
Combine all cupcakes ingredients in a stand mixer and beat until combined.
Fill cupcake liners with 1/4 cup of batter each.
Reduce heat to 350 degrees F.
Bake for 18-22 minutes until toothpick comes clean after being inserted into the center of the cupcakes.
Remove from oven and move cupcakes to cooling racks to finish cooling.
While the cupcakes are cooling, prepare the chocolate buttercream according to recipe directions. A store-bought frosting may also be used.
Pipe a swirl of frosting onto cooled cupcakes, pour the sprinkles into a small bowl and dunk the frosted cupcakes in them. Pipe on another small dollop of frosting to make the head.
Add 2 eyes to each head as well as 1 Reese's Piece sideways to make the beak. Use 7 candy corn per cupcake to make the feathers.