The Virtual Birder
North America

ABA
North America

Australia

Birdwatching Australia
A directory of Australian birdwatching

The Malleefowl Preservation Group Inc
A community initiative dedicated to conserving Australia's native species.

Brazil

A Última Arca de Noé
(The Last Noah's Ark)
Ecology, environment, biodiversity, environmental education, animals, birding etc. Portuguese/English.

Canada

SCO
The Society of Canadian Ornithologists

IBA Canada
Important Bird Areas of Canada

Italy

LIPU
Protection of Birds in Italy

United Kingdom

British Trust for Ornithology
National organization

United States of America

National Audubon Society
Member based conservation organization

American Birding Association
National organization for active birders

EBird
National Database

Association of Field Ornithologists
National organization

American Ornithologists' Union
National organization

Cornell Lab of Ornithology
Extensive birding resource

NBFS
National Bird-Feeding Society

NestWatch
Nest-monitoring database

CDC
What you should know about health, when you travel

CDC
Tick-borne diseases

Mosquitozone
Mosquito Control

Embassy Worldwide
Global directory

US Department of States
Travel warnings

CIA
The World Factbook

Birdtours.co.uk
Trip Reports

Blake Maybank
Birding the Americas

JP Paris
Trips around the world

Hummingbird Migration Tracker
Lots of great resources here. Including a page for tracking the migration of hummingbirds.

It's a service they provide on their site where they sell specialized and proven successful bird feeders. Like these specifically designed for hummingbirds.
 

Steve Hampton's Gull Identification Website
These pages are dedicated to those rakish scavengers from the north (okay, some are from the south): gulls! gulls! gulls! Many breed in remote locales, migrate great distances, and, in winter, form the most coveted phenomenon that birders hope for: mixed species flocks. With these habits, there exists tremendous potential for rare vagrants to show up anywhere (e.g. a Glaucous-winged Gull in Morocco!). It is hoped that this website may help us all with gull identification.

Birder's WebRing
This webring is devoted to websites about birding and birdwatching; ornithology; wild birds; bird resources and references; birding localities and observatories; and related topics.

WindowAlert
WindowAlert was founded in 2003 based on the invention of a new, ultraviolet-reflective window decal. Birds can see ultraviolet light, but humans cannot.

HawkCount
HawkCount.org facilitates the tracking and reporting of raptor migrations.

ARKive
Unique collection of thousands of videos.

Gerard Gorman's Woodpeckers of Europe
Information, ID, notes, photographs and more on Europe's Picidae

The Hummingbird Society
Teaching about hummingbirds, and working to protect them.

Eremaea Birds
A free birding records database and atlas.

Handbook of the Birds of the World
The Internet Bird Collection(IBC)

Hummingbirds.net
North American Hummingbirds

Trumpeter Swan Society
Dedicated to the vitality and welfare of wild Trumpeter Swans

Irispigmentation.com
Eye Colors for 5620 Species Amphibians; Reptiles; Birds; Mammals

International Crane Foundation
Protection of Cranes worldwide

grus-grus.com
Crane Migration

The Birds of North America Online
Interactive website between AOU and Cornell

BirdSource
Interactive website between Audubon and Cornell

Arthur Cleveland Bent
North American Birds

Owling.com
All you want to know about Owls

The Turkey Vulture Society
Turkey Vultures

ARRCN
Asian Raptor Migration

The Peregrine Fund
Conservation of Birds of Prey

American Ornithologist's Union
Scientific study of birds

Cooper Ornithological Society'
Scientific study of birds

Pacific Seabird Group
Professional seabird researchers

Neotropical Bird Club
Central and South America Conservation

Birdinfo.com
North America Bird Information

Raptor Research Foundation
Study of Birds of Prey

VIREO
The Academy of Natural Sciences

AMNH
American Museum of Natural History

Journey North
Wildlife Migration

Bartram Trail
William Bartram Naturalist

W.W.G.B.P
World Working Group on Birds of Prey and Owls

Avian Taxonomic
Dataset

Eastern Partnership
Whooping Crane

Loggerhead Shrike
Banding Study

Purple Martin Conservation Association
Scientific study of Purple Martins

North American Bluebird Society
Research and Recovery of Bluebirds

The Bluebird Box
Lots of info about Bluebirds

Trochilids Web Page
Hummingbird Mapping Projects

ShorebirdWorld.org
Migrating Shorebirds

Norwegian Gull Page
Gulls

Greg Lasley's
Gulls

The Owl Pages
Owl Photos

Kranichdatenbank
Crane Data

Native America
Native plants and Animals Reintroduction

National Wildlife Federation
Backyard Wildlife Habitat

Nutty Birdwatcher
Info about Birds and lots more

GBBC
Great Backyard Bird Count

KidWings
Website for Young Birders

Feathers
All about feathers

Birdlist.org
Checklists

Cascadia
Many Bird related Links

BableBird
Multilingual Bird Search Engine

Birdseek.com
Multilingual Bird Search Engine

Bird Watcher's Central.com
The Site for Birdwatchers

USGS
Banding codes

USGS
Country Flag Codes

USGS
Report Banded birds

Clenson Universty
Migration

ChatterBirds
Online bird watching community

Birdingpal blog
Global forum for travelling birders

Birdwatchers Community
US Site

Birdforum
UK Site

Bird Watcher's Digest

The Birder's Library
Book Reviews for Birders

Birds and Nature
Searchable Index

Birds of Britain
Excellent UK Magazine

EMU
Australian Journal

Books for Birders
Lots of Bird Books

NHBS
Nature Books

Peterson Online
Field Guides

Quaderni di birdwatching
Italian Magazine

Edward R. Hamilton
Discount Books, USA only

Buteo Books
Bird books only

Bibliofind
Used and Rare Books

Audubon
Online Magazine

Andrew Isles
Australian Nature Books

Princeton University Press
Books

Marine Ornithology
Pelagic magazine

Bookfinder
40 Million New, Used, Rare and out of Print Books

Amazon.com
Only Bird Books

Aquila Antiquariaat
Natural History Books

Internet Bird Collection (IBC)
A non-profit endeavour with the ultimate goal of disseminating knowledge about the world's avifauna.

xeno-canto
the community database of shared bird sounds from the whole world.

Soundscapes for Birders
Go Birding by Ear. Natural sound, well recorded, creates a sense of presence like nothing else.

Birdsounds.nl
Bird and nature sounds from around the world.

Buteo Books
Birding Books, Audio and Multimedia Guides.

WildSounds
Wildlife Books, Audio and Multimedia Guides.

Bird Songs International
DVD- and CD-ROMs about the birds of tropical places

Naturesounds.com.au
Bird Songs Australia

Naturesongs.com
Bird Songs

Mangoverde
Good Site

What is pishing?
Not quite Bird Sounds

Old Bird
Flight Calls of Migratory Birds

St. Paul Island
Alaska

Tony Palliser's Pelagic Page
Australia

Chris Dahlberg's River Tours
Australia

Frank O'Connor's
Australia

Blue Water Adventures
British Columbia

Searcher Natural History Tours
San Diego, California

Mitch's Pelagic Trip
California

Shearwater
California

Birding the Humboldt Current
Chile

The Rain Goddess
Costa Rica

Key West Travel Guide
Florida Keys

Nature Tour Florida
Sarasota, Florida

Louisiana Ornithological Society
Louisiana

Bold Coast
Maine

Norton of Jonesport
Maine

Bay Ferries
Maine, Maritimes

Assateague Island
Maryland/Virginia

New England Seabirds
New England

Cresli
Long Island, New York

Freeport Water Taxi & Tours
Nautical Mile in Freeport/Long Island, New York

BirdingAfrica
South Africa

Zest for Birds
South Africa

Brian Patteson, Inc.
Virginia and North Carolina

Westport
Washington

Birdingpal Guides
Guides around the world

TRAVELBEAT.net
Guide to Birds and Habitats

Mexicovacationtravels.com
A travel information website for visitors interested in Mexico Vacation Destinations.

Puerto Rico Guide
Make the Puerto Rico Guide your first stop for learning about the advantages of traveling to this gorgeous island.

Admiral Andy's ask about Cruises
World wide cruising

Hotels-Compare.com
Holland

Access Holiday
Exotic Destinations

Roam Mobility
World wide Cell Phones

The Hospitality Club
Free Accommodation

Easytobook.com
Amsterdam Hotels

LoveMySeat.com
Airplane seating

Bangkok Hotels
Discounts hotels with guaranteed lowest rates.

National Wildlife Federation
US Conservation

Canadian Nature Federation
Canadian Conservation

Ramsar
Wetland Conservation

Great Lakes Directory
Environmental Directory

Environmental Web Directory
Great Links if you care about the Environment

World Heritage
Not all wildlife

PollutionWatch
Canada

PollutionWatch
USA

Defenders of Wildlife
US Site

American Bird Conservation
US Site

CTB
Conservation through Birding

Ducks Unlimeted
Wetlands Conservation

Manomet
Center for Conservation Sciences

WWT
Wildfowl and Wetlands Trust

Towerkill.com
Prevent towers for killing birds

FLAP
Fatal Light Awareness Program

Perky-Pet
For a large selection of Feeders and Information

Hummingbird Guide
For a large selection of Hummingbird Feeders, Accessories and Wind Chimes

Bird Feeder Stations
Best bird friendly products available to attract wild birds to your garden.

Acerca de Samot
Spanish online shop that sells binoculars and telescopes.

Birdwatching Shop
Buy and search for all your birdwatching equipment here at a very affordable prices.

Your Bird Oasis
Helping you Create a Bird Oasis in your Backyard.

Yard Envy
Garden Decor, Outdoor Furniture, Bird Houses and Bird Feeders.

Vine House Farm Bird Foods
A full range of high quality bird foods.

British Bird Lovers
British Bird Lovers is dedicated to anyone who enjoys caring for and observing wild birds.

Squirrel Proof Bird Feeder Guide
If you are looking to learn about squirrels, squirrel proofing your current feeder, or information to help with your next purchase of a bird feeder, you have come to the right place.

Birding Depot, California
Bird feeders, birdhouses, and other wild bird products including helpful bird watching tips.

Birdingstuff.com
A comprehensive site for novice bird watchers with tips and helpful articles

Wild Birds and More
Feed them and they will come.

Best Birding
Everything you need for birdwatching

Findabirdhouse.com
Best habitat for our feathered friends in Florida

Simons Bird Feeders
Your source for Quality feeders

Overbird
One-of-a-kind hand-made, decorative birdhouses and feeders.

The Bird Brain
For Hummingbird Lovers

Bird Feeders Direct
Independent online resource

Backyardnatur.com
Natur gifts and more.

BirdShopper.com
Large selection of bird feeders, birdhouse
and other products.

Birdwatching.com
Excellent resource for birders

BirdGuides Limited
Excellent resource for the traveling birder

Wild Birds Unlimited
Large retail chain catering to Birders

Ornithology.com
Excellent resource for birders

Heritage Farms
Bird Feeders

WildBirdHabitatStore.com
Excellent enviromental resource

The Backyard Bird Watcher
All a bird needs in the backyard

The Backyard Bird Company
All a bird needs in the backyard

The Little Chickadee
Feeders, food, houses, and unique gifts for bird lovers.

Shaw Creek Bird Supply
Bird Feeders, houses and much more

HummZinger
Bird Feeders

The Roller Feeder
Designed with Songbirds in mind

The Bird Table
UK wild bird food, bird feeders, bird baths, bird tables and nest boxes.