What's unusual about this photo by Marco Van Brabant??
The butterfly! As Jantet Terchek incredibly answered, it's a Mourning Cloak! (Congrats to Janet — never thought anyone would get the butterfly, let alone the species….)
Close-up of same follows. (Thanks, Marco!)
But what kind of butterfly is it?
Fooled me!!! That sure looks like a bird below the butterfly until you enlarge it!!