Species accounts of North American birds, including images, descriptions, and sounds.

National Wildlife Federation's eNature images and descriptions arranged by family and most common species. Includes field guide check-list for sightings.

Fieldguide structured to provide an aid to divers wanting to identify fish they've encountered.

Resource and community for nature enthusiasts. Complete guide to over 4, 800 North American plants and animals, with detailed descriptions and photographs, habitat guides, eCards, and newsletters.