·     Single wing – wing-shaped outline, with:

o Top: bold ceiling and top part of the edge “near the body”

o Edge “near the body” (representing the attachment to the body of the bird? / partitive disk?):

§ One or two bold, semi-circle arcs – region inside inner arc is (optionally) cross-hatched.

§ Arc of dots outside of the outer arc.

o Edge “far from the body”:

§ A series of parallel, slightly curved ticks (representing the feathers of the wing).

o Variation possible of feathers on the right or feathers on the left, i.e. mirror images of one another.

·     Double wing:

o Two single wings, mirror images of one another, joined horizontally at the edge “near the body”.