Now, so the story goes, the light colored moths easily were seen by birds, while the dark moths were camouflaged better.
(the story; goes; ) (the light colored moths; easily were seen; by birds; T:while the dark moths were camouflaged better; T:Now; T:so the story goes) (the dark moths; were camouflaged better; )
the story the light colored moths the dark moths
goes easily were seen were camouflaged better
by birds T:while the dark moths were camouflaged better T:Now T:so the story goes