- A2Z4Birders
- Offers online guide services for birding activity in the country. Also includes details on various sighting areas in the country.
- American Bird Center
- Promotes awareness on the conservation of birds in the country. Also includes resources.
- American Birding Association
- Non-Profit organization aims to motivate citizens as well as to give education programs for the protection of wild birds.
- Birchside Stadios
- Provides a photo gallery on various species including birds, mammals, reptiles, amphibians and insects.
- Bird Center
- Contains documentations from organizations for Central United States or Canada regarding the rare species in the region.
- Bird Guide
- Provides information on sighting areas in Oregon and Pacific Northwest. Includes tips for species identification.
- Bird Information Website
- Displays collection of photo images on various species in the Antartica and North America areas. Also includes list of sighting areas.
- Bird Song and Wildlife Unlimited
- Presents a book by Ernie Jardine, which contains tips for identifying and learning birds’ noise.
- Bird Watcher's Digest
- Offers magazine products containing information related to birding activity and also the various species.
- Bird_RBA
- Keeps records on various reports regarding on the current condition of rare species.
- BirdBand
- Contains discussions from bird banders concerning common problems related to the species itself.
- BirdEast
- Collection of information from the organizations in the Eastern United States concerning on the condition of unusual birds.
- Birdfilms.com
- Sells videos of Sparrow and Warblers that shows the behaviors and habitats of the species.
- BirdHawk
- Provides compilation of reports regarding the status and sightings of birds in North America.
- BirdIQ
- Conducts programs and activities to all people in the country regarding on the protection and conservation of species.
- Birds of North America Online
- Provides information on the characteristics, distribution, migration and habitats of various species. Also includes search features.
- Birds-Cornell Lab of Ornithology
- Contains information on research, citizen science as well as education and conservation programs for wildlife species in North America.
- BirdSource
- Promotes protection and preservation of birds in the country; and discusses the distribution of the species.
- Birdwatching.com
- Provides stories, videos, and birding tips dedicated to any bird enthusiasts.
- BirdWest
- Compiles collection of reports, coming from organizations in the region regarding unusual species.
- Birdzilla.com
- Compiles birding destinations, festivals, and tour companies.
- Boreal Songbird Initiative
- Non-profit organization aims to give education to the people concerning the protection and preservation of the forests.
- eNature: Birds
- Displays links to different types of species arranged according to categories. Also includes resource articles.
- Familiar Birds
- Highlights the series of volumes regarding on the North American bird ecology.
- Hawk Migration Association of North America
- Non-profit organization supports protection and conservation of raptor inhabitants. Includes information on upcoming activities.
- Hummingbids.net
- Contains descriptions and brief details on various classes; and provides tips in attracting, feeding and caring of the species.
- Nature Conservancy
- Promotes the protection and preservation of the ecosystem around the world. Includes information on its activities and programs.
- North America Rare Bird Alert
- Provides documented reports regarding rare species in North America. Includes photo images and details on sighting areas.
- North American Bird Sounds
- Discusses the areas and habitats of the listed species. Also provides recorded voices of the birds.
- North American Birds Photo Gallery
- Shows images of various species, according to its categories, which can be seen in the country.
- Old Bird
- Provides sources to any enthusiasts in launching posts to observe night flight calls of migrating birds. Also includes information on products.
- On Silent Wings Bird Photography
- Shows collection of photo images on various types of birds.
- Partners in Flight
- Focuses on the protection and conservation of bird species.
- Patuxent - Bird Population Studies
- Provides information on the researches conducted. Includes list and identification tips of the bird species.
- Peterson Birding Resources
- Provides list of related sources regarding on the species as well as information for activity.
- Sibley Guides
- Offers a collection of birding guides. Also includes information on events and programs.
- Swamphen
- Shows lists of bird species recorded in every country. Also compiles birding resources.
- USGS
- Provides ornithological names of the various types of birds.
- Virtual Birder
- Provides information on birding tours in North America. Also includes photo gallery of various species.
- WhatBird
- Aims to identify species in North America. Also includes search features.
- Wisconsin Breeding Birds Atlas, Species Audios
- Provides recorded sounds of species, arrange according to its family and order.
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