I was just taking pictures of a Mottled Duck when this guy just appeared out of the reeds, took about 5 feet worth of steps and disappeared again in the reeds. Luckily I had the scope already trained on the duck so I just swung it over, or I never would have caught him.
I think that Rails are like the ghosts of the marsh. There usually quiet as they just go to and fro among the reeds. You don't really find Rails, they find you!