Common Loon and Bird Migration Research in Algonquin Provincial Park
- Species account for Gavia immer provides facts, photos, and sound files. Includes answers to research questions, such as how acid rain affects these birds.
- http://sbaa.ca/projects.asp?cn=303

Gavia stellata (Red-Throated Loon)
- Taxonomy, distribution, physical characteristics, and natural history of this bird.
- http://animaldiversity.ummz.umich.edu/site/accounts/information/Gavia_stellata.html

Gavia pacifica (Pacific Loon)
- Scientific classification, food habits, behavior, and habitat of this species.
- http://animaldiversity.ummz.umich.edu/site/accounts/information/Gavia_pacifica.html

Common Loon (Gavia immer)
- Photo, range maps, and facts on this bird's habitat, nesting, and behavior.
- http://www.nenature.com/CommonLoon.htm

Arctic Loon (Gavia arctica)
- Images of this species in Japan.
- http://www.amazilia.net/images/Birds/Loons/ArcticLoon.htm

Pacific Loon (Gavia pacifica)
- Species account describes this bird's identifying traits, nesting, diet, and taxonomy.
- http://www.mbr-pwrc.usgs.gov/id/framlst/i0100id.html

Yellow-billed Loon (Gavia adamsii)
- Image, taxonomy chart, identification tips, and facts about this species' breeding.
- http://www.mbr-pwrc.usgs.gov/id/framlst/i0080id.html

Black-throated Diver (Gavia arctica)
- Video, identification tips, and European range.
- http://www.birdguides.com/html/vidlib/species/gavia_arctica.htm

White-billed Diver (Gavia adamsii)
- Images of a bird in Lincolnshire, UK.
- http://www.lincsbirdclub.co.uk/rare_birds/white_billed_diver_2.htm