Genus
Chlidonias (Marsh terns)
Chlidonias niger. Photo: (c) nancylightfoot, some rights reserved (CC BY-NC)
The name marsh tern refers to terns of the genus Chlidonias, which are typically found in freshwater marshes, rather than coastal locations. The genus name Chlidonias is from Ancient Greek khelidonios, “swallow-like”, from khelidon, “swallow”.