This lark looks fun to color - its bold head and long tail make it a great subject to highlight. Its head can be rendered with different shades of black, and its white stripe drawn more prominent. The brown back should be shaded with browns of various depths and lightly speckled with white. Its breast should be lighter than its back, and its spots should be shaded in darker brown hues. Experiment with different colors and textures to make the lark come alive - the overall effect should be one of vibrancy and depth.