Feathers were considered early on. I'm bummed they didn't use them for at least some of the designs.
That interview is worth reading for other cool bits beyond the feathers mention also.
On another note, I can't recall if this was ever posted.. I wish I knew who did it!

Salt in the wound.
 
	 
				 
 
		 
	 
	 
	 
	 
	 
	
 
 
		 
 
		 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 Same with the rest of the features on it.
 Same with the rest of the features on it. 
	