Prepare a square sheet of paper. Cut off the bottom corner yes, so that its top is in the middle of the square (drawing a). Fold the paper diagonally in half (drawing b). Bend the two side corners like this, so that their tops touch the side, which will be the height of the bird (drawing c, d). Bend the top of the paper facing down, forming the head (drawing d, e, f), and the lower corners inward (drawing f, g). You can also bend the penguin's head as shown in figure g.