Rails are one of my favorite bird groups. Part of their allure is that many are very difficult to see (or photograph) well. I shall start this thread by posting some photos of Clapper Rails (Rallus crepitans).
When I was playing recordings as part of a King Rail survey, this Clapper Rail (a very close relative) became very agitated and walked right up to me. He was calling vociferously to assert his territory. Clapper Rails are normally very secretive, but with good fieldcraft or when a bird's hormones are raging, one sometimes gets lucky photo opportunities. This bird seemed to be saying "Hey buddy, have you seen that interloper?"
Here is what may be the same Clapper Rail, in the same location, down to a few meters. It is either the same male, or his mate. It is in the process of gulping down a Fiddler Crab, whose legs it had just removed one by one.
Here is a mother Clapper Rail and her downy chicks at the edge of a salt marsh next to the dike of a former ricefield that had recently been mowed. They were foraging in the open and occasionally ducking back in the marsh grass.