- Alaska Fish and Game: Terns
- Illustrated article lists appearance, breeding range, and migration of various species. Gives general description, life history, feeding, behavior, and populations.
- Animal Diversity Web: Black Tern (Chlidonias niger)
- Looks at images, range, habitat, classification, physical and reproductive features, behavior, seasonal diets, State of Michigan listing, and other names.
- ARKive.org: Roseate Tern (Sterna dougalli)
- Facts include status, source of name, appearance, sound, range, nest sites, diet, brood size, threats, and conservation efforts.
- Black-fronted Tern (Sterna albostriata)
- From ARKive.org, looks at classification, size, status, range, habitat, appearance, behavior, threats, and conservation. Offers pictures.
- Forster's Tern (Sterna forsteri)
- Overview from University of Michigan ADW includes photographs, regions, biomes, size and appearance, mating and parenting, activity, diet, predation, and population estimates.
- Monterey Bay: Terns (Sternidae)
- Reviews appearance, size, range, habitat, nesting, taxon variations, migration, breeding behavior, and pictures for groups and species.
- USGS: Caspian Tern (Sterna caspia)
- Information includes appearance, plumage differences with images, similar species, habitat, breeding, diet, range maps, sound file, and taxonomy.
- Virtual Zoo: Inca Tern (Larosterna inca)
- World Association of Zoos and Aquariums' factsheet contains range, status, images, distribution map, and link to UK zoo exhibit.
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