Paint the tube all over with brown paint and stand it upright to dry for twenty minutes until completely dry to the touch.
Pinch both top corners of the dry tube and fold them inward and down to make two pointed ear-tufts. Press flat and add a dot of glue if they spring back.
Cut two four-centimetre eye circles from white paper and two smaller pupils from black paper, glue the pupils on, then glue the eyes to the front of the tube. Fold a small orange diamond in half for the beak and glue it between the eyes.