Vultures are famous for sunning with outspread wings.  Sometimes they twist their wings up in an awkward way. Herons do this too.  Probably an attempt to use UV to kill feather degrading bacteria.   (Comments of an ornithologist upon seeing the photograph to the left.)

Two turkey vultures having a discussion at the top of a dead tree in Virginia.

The "vulture's" position on the panel, under an owl and next to an anthropomorph....