Solving the Parrot

There's a certain amount of ambiguity here, since we're dealing with a non-rectilinear form, in the parrot. In particular, the plan of the parrot (on the floor in light blue) is approximate. But there is no doubt that the shadow of the bird's head ends up on the wall.

(Note that the bird's right shoulder casts its shadow into the head shadow, while the left shoulder's shadow is cast to the floor!)

As you can see, the other landmarks on the bird that I used to plot his shadow are the top of his head and the end of his tail. The shoulders were useful in establishing the width of the shadow.

Both the floor part and the wall part of the shadow basically follow, and lengthen along, their respective d-lines (magenta and orange).

JH