Anseriformes
Anatidae, Duckdata, International Goose Research Group, Jan's Ornamental Waterfowl Pages, Natural History of Wildfowl, Order Anseriformes
Apodiformes
Allen's Hummingbird (Selasphorus sasin), Anna's Hummingbird (Calypte anna), Broad-billed Hummingbird (Cynanthus latirostris), Chimney Swift (Chaetura pelagica), Driftwood Wildlife Association, Greg Lasley's Hummingbirds, Hummer/Bird Study Group, Hummingbird Identification, Operation RubyThroat, Phaethornis superciliosus (Long-Tailed Hermit)
Caprimulgiformes
Antillean Nighthawk (Chordeiles gundlachii), Chuck-will's-widow (Caprimulgus carolinensis), Common Nighthawk (Chordeiles minor), Common Pauraque (Nyctidromus albicollis), Common Poorwill (Phalaenoptilus nuttallii), Common Poorwill (Phalaenoptilus nuttallii), European Nightjar (Caprimulgus europaeus), Lesser Nighthawk (Chordeiles acutipennis), Whip-poor-will (Caprimulgus vociferus), Whip-poor-will (Caprimulgus vociferus)
Charadriiformes
Alcidae, Charadriidae, Laridae, Recurvirostridae, Scolopacidae, Australasian Wader Studies Group, Feathers, Flyways and Friends - Shorebird Educatio, International Wader Study Group, Shorebird Sister Schools, Shorebirdworld, U.S. Shorebird Conservation Plan, Western Atlantic Shorebird Association
Cuculiformes
Black-billed Cuckoo (Coccyzus erythropthalmus), Greater Ani (Crotophaga major), Hoatzin - Relic of Prehistory, International Touraco Society, Koekoea, the Long Tailed Cuckoo, Mangrove Cuckoo (Coccyzus minor), Pipiwharauroa, the Shining Cuckoo (Chrysococcyx lu, Yellow-billed Cuckoo (Coccyzus americanus)
Falconiformes
Accipitridae, Falconidae, Pandionidae, Birds of Prey, Buteo.com, Peregrine Fund, Raptor Information System, Raptors
Galliformes
Cracidae, Odontophoridae, Phasianidae, Game Bird and Waterfowl Pages, Malleefowl Preservation Group
Gaviiformes
Arctic Loon (Gavia arctica), Arctic Loon (Gavia arctica), Black-throated Diver (Gavia arctica), Common Loon (Gavia immer), Common Loon (Gavia immer), Common Loon and Bird Migration Research in Algonqu, Gavia pacifica (Pacific Loon), Gavia stellata (Red-Throated Loon), Pacific Loon (Gavia pacifica), White-billed Diver (Gavia adamsii)
Passeriformes
Acanthisittidae, Alaudidae, Bombycillidae, Callaeatidae, Campephagidae, Cardinalidae, Certhiidae, Corvidae, Dicaeidae, Emberizidae
Phoenicopteriformes
Dorothy's Fabulous Flamingos, Flamingo Mania, Greater Flamingo (Phoenicopterus ruber), Lesser Flamingo (Phoenicopterus minor), Phoenicopterus ruber (Greater Flamingo)
Piciformes
Campephilus, Colaptes, Dryocopus, Melanerpes, Picoides, Sphyrapicus, African Barbets and Tinkerbirds (Lybiidae), American Barbets (Capitonidae), Asian Barbets (Megalaimidae), Order Piciformes, Woodpecker Family
Podicipediformes
Clark's Grebe (Aechmophorus clarkii), Eared Grebe (Podiceps nigricollis), Least Grebe (Tachybaptus dominicus), Nocturnal Foraging by Western Grebes, Pied-billed Grebe (Podilymbus podiceps), Pied-billed Grebe (Podilymbus podiceps), Red-necked Grebe (Podiceps grisegena)
Procellariiformes
Audubon's Shearwater (Puffinus lherminieri), Bermuda Petrel (Pterodroma cahow), Black-capped Petrel (Pterodroma hasitata), Black-footed Albatross, Blue Petrel (Halobaena caerula), Brian Patteson's Images of Pelagic Seabirds, Christmas Shearwater, Cory's Shearwater (Calonectris diomedea), Fulmar (Fulmarus glacialis), Greater Shearwater (Puffinus gravis)
Psittaciformes
Cacatuidae, Psittacidae, Birds Australia Parrot Association, Parrots International
Sphenisciformes
Aptenodytes, Eudyptes, Eudyptula, Megadyptes, Pygoscelis, Spheniscus, Antarctic Connection - Penguins, Antarctic Penguins (Adelies and Emperors), Birding Antarctica: Penguins, Falklands Penguins, Falklands Penguins, Hedwig's Penguin Home, International Penguin Conservation Work Group, Into The Abyss?, Nature: the world of penguins, New Zealand Penguins
Strigiformes
Strigidae, Tytonidae, Australian Owls and Frogmouths, Biology and Conservation of Owls of the Northern H, Brazil's Owls, Chouette Magazine International, eNature.com - Nature and Wildlife Field Guides, Environment Week 1 - Caring for Raptors, Flight to Freedom, Inc - Rehabilitating Owls, Furness Owls, Gander Academy's Owl Resources on the World W, Gander Academy's Owls Theme Page
A Field Guide to the Birds on the Web
Links to pictures, sounds, and video of the birds of the world, systematically indexed.
American Ornithologists' Union Check-list of
Official source on the taxonomy of birds found in North and Middle America, including adjacent islands. The full list of bird species (with scientific and English names) is online in HTML, .pdf, and Excel formats.
Avibase
An extensive database information system about all birds of the world, containing nearly 1 million records about 10,000 species and 22,000 subspecies of birds, including distribution information, taxonomy, and synonyms in several languages.
Bird Families of the World
Don Roberson's detailed guides to about half of the world's 202 bird families.
Bird Families of the World
Short descriptions and sounds of the world's bird families by Chris Butler.
Bird Hybrids Database
Worldwide database compiled from the ornithological literature of birds with two different species as parents. Includes complete references for each species combination. In English, French, and Spanish.
Bird Lists
Lists sorted by taxonomy, scientific names, or English names for the world, the ABA area, or the AOU area.
Birdhybrids
Mailing list for discussion of bird hybrids.
Birds of North America
Comprehensive reference series on North American birds, with information and sample profiles.
Birds of North American, Audubon's Watercolor
Fifty-one images of North American birds from watercolors done by John James Audubon. List can be browsed by common or scientific name.
Birds of the World
List of current valid scientific avian names subdivided by order and family, based on the Sibley and Monroe and AOU lists. Includes scientific names and publication details.
Birds of the World
Lists of all species with scientific and English names, subdivided by Family. Choice of list based on the Clements or the Sibley and Monroe classification schemes.
Birds: Wonders of the Sky
World Book Encyclopedia article covers physical features, behavior, migration, factors which determine range, and how to protect birds. Includes brief facts on individual species.
Class Aves
Provides a definition of birds (Aves) and describes their traits.
Eggs - A Virtual Exhibition
The Provincial Museum of Alberta's on-line, searchable, field guide of over 300 bird eggs. Global, with emphasis on birds of Alberta. Includes photos and taxonomic information.
Exotic Pet Veterinarian - Avian Anatomy
Describes the anatomy and physiology of birds for the lay audience, explaining technical terms along the way. Some emphasis on details of psittacines.
Handbook of the Birds of the World
Information about the book series that will illustrate and deal in detail with all the species of birds in the world. Site includes tables of contents, sample pages, and publication schedule.
History of North American Bird Names
Details all the changes in the American Ornithologists' Union Checklists from 1886 - 2000.
Introduction to the Aves
Scientific background and information on birds.
John Penhallurick's Bird Data Project
Attempt to build a comprehensive database about the birds of the world, both extant and extinct since 1600.
Mango Verde
Photos and sounds for almost 2000 bird species; field guide quick indices.
Multilingual Bird Search
Translates world bird names between several languages, including scientific names. Includes photo gallery.
The Internet Bird Collection
Video library of footage of the world's birds, sponsored by the Handbook of the Birds of the World.
Virtual Bird
A collection of bird photographs, videos, and songs from North America and Europe (mainly Finland).