King rail
This rail forages in shallow water near cover and eats mainly aquatic insects and crustaceans. It forages by probing the mud while moving around in shallow water.
Marsh shrew
The marsh shrew eats invertebrates, including spiders, earthworms, sowbugs, centipedes, termites and other terrestrial and aquatic arthropods. It was observed in captivity pursuing and killing a goldfish, but not eating it. In contrast, the American water shrew has been observed killing and eating fish. A study of the gastric contents of marsh shrews in Oregon indicated that at least 25% of their diet is aquatic, including insect larvae, slugs and snails, mayfly naiads and other, unidentified invertebrates. Other researchers have reported that their diet may also include aquatic insects (water beetles and stonefly nymphs), craneflies, ground beetles, spiders, harvestmen, centipedes, earthworms, slugs and small terrestrial snails. The marsh shrew swims, making short dives in search of food; its mobile snout, whiskers and lips are used to find and capture underwater prey. Before eating, it returns to land. Air trapped in its fur provides buoyancy, and marsh shrews can run for as long as 3 to 5 seconds along the top of the water. According to mammalogist Donald Pattie, they can "scull on the surface like whirligig beetles". The air trapped in its fur gives it a silvery sheen. On land, its foreleg and opposite hind leg move at the same time.