Most species have bright plumage with little differences between the sexes. Most are found only in forests. They eat a wide range of prey, including fish. They usually catch prey by swooping down from a perch. Many live near rivers and eat fish, but most species live away from water and eat small invertebrates. Like other birds of their order they nest in holes, usually tunnels dug into the natural or artificial banks in the ground. A quarter of all kingfishers nest in disused termite nests.