The King Rail is the largest rail in North America and, in Michigan, one of the rarest and most secretive marsh birds. It looks much like an oversized Virginia Rail — rusty-cinnamon below with boldly barred flanks and a long, slightly downcurved bill — but is considerably larger. Like other rails it is laterally compressed to slip through dense vegetation and is far more often heard than seen, giving deep, grunting, and clattering calls from the heart of big freshwater and brackish marshes.
A bird of large, healthy wetlands, the King Rail has declined sharply with the loss and degradation of marsh habitat and is a species of serious conservation concern, listed as Near Threatened globally and as state-endangered in Michigan, where it is a rare and local breeder and visitor. It feeds heavily on crayfish and other aquatic prey, stalking through the reeds. Any King Rail in the state is a significant record, and its dependence on extensive marshes makes it an emblem of wetland conservation.
Feeds heavily on crayfish, along with aquatic insects, small fish, and other invertebrates, foraging by stalking through dense marsh vegetation and along the edges of open water. Crayfish are an especially important food, and the rail probes and picks prey from the mud and shallows.
The King Rail looks like a much larger version of the Virginia Rail — both are rusty with barred flanks and a long, slightly downcurved bill, but the King Rail is considerably bigger. Size is the key, though the two can be hard to separate in dense cover.
Loss and degradation of large freshwater marshes have driven steep declines. It is listed as Near Threatened globally and as state-endangered in Michigan, occurring here only as a rare and local breeder and visitor.
Almost always by voice. The King Rail gives deep grunting and clattering calls from within dense marsh vegetation, since it stays hidden and rarely comes into the open. Even where present it is easily missed.
Chicks are black like other rail chicks, and juveniles are duller and grayer than the cinnamon adult, which makes separating them from Virginia Rail a size-and-bill question rather than a color one.
Other birds you might be looking at instead.
Pick the park — it takes less than ten seconds.
Start typing the bird's name, then pick it from the list.
Suggest a birding spot to add to the map. I'll review it before it appears.
Thanks! Your suggestion has been sent for review.
Found something wrong or out of date? Tell me what to fix — it goes straight to my inbox. (No email needed.)
Thank you — your note is on its way. I appreciate the help keeping this accurate.