Ornithology

• Science: Biology: Plants and Animals: Animalia: Chordata: Aves 
• Recreation: Birding 
• Recreation: Outdoors: Animals and Plants: Birds 

• All About Birds  - Offers a full featured guide to birds and bird watching.
• American Ornithologists’ Union  - Professional organization devoted to the scientific study of birds. Site provides information on membership, publications, and outreach programs.
• Association of Field Ornithologists  - Organization with membership open to professional and amateur ornithologists worldwide.
• British Trust for Ornithology  - Conducts research and volunteer-based surveys to promote bird conservation.
• Latvian Ornithological Society  - Private organization aiming to ensure the sustainable existence of all bird species in the Latvian territory.
• Pacific Seabird Group  - Conducts research and studies focusing on Pacific seabirds and their environments.
• Raptor Research Foundation  - Professional organization facilitates studies and conferences on the conservation of birds of prey.
• Society for the Conservation and Study of Caribbean Birds  - Regional group dedicated to the conservation of wild birds and their habitats in the Greater Caribbean area.
• Society of Canadian Ornithologists  - Site provides details on the society's membership along with information on policies, publications, and meetings.
• The Waterbird Society  - International scientific organization focusing on the study and conservation of waterbirds. Also fosters communication and coordination among professionals in related fields.
• Zoonomen  - Zoological nomenclature resource of birds of the world. Contains current valid and scientific avian names.