From pattern, available free on Andover's Natural History page under the "Quilts and Downloads" tab (EDIT: No longer linked to from that page, but still findable on Andover's main Free Patterns listing, search for "Natural History" - or use this direct link to the PDF.):
Quilt finishes 84" x 108"
What is light and dark and fun all over? This contemporary quilt with its optical illusions–which colors are in the foreground and which in the background?–will make quite an impact in any room. The fun will be in arranging the multiple prints to create a quilt that is uniquely yours.