Sandhill Crane (Grus canadensis)
- Explains how this bird differs from the Great Blue Heron in appearance, nesting habits, and calls. Describes the crane's food habits and migration.
- http://www.bakersanctuary.org/facts.html

Whooping Crane Conservation Association
- Organization promoting preservation efforts for the Whooping Crane (Grus americana) and its habitat.
- http://www.whoopingcrane.com/

Common Crane (Grus grus)
- Images, videos, and sound recordings of this species.
- http://www.mangoverde.com/birdsound/spec/spec43-11.html

Whooping Crane Report
- News, information, and images from the USGS Patuxent Wildlife Research Center.
- http://www.pwrc.usgs.gov/whoopers/

Majestic & Endangered Whooping Crane (Grus americana)
- Photos and facts from an Alberta, Canada perspective.
- http://raysweb.net/specialplaces/pages/crane.html

International Crane Foundation
- International center for the study and preservation of cranes.
- http://www.savingcranes.org/