Audubon Washington: Includes conservation, action, birds, state chapters, volunteer opportunities, news, publications, and upcoming events.
BirdWeb: Seattle Audubon's Online Guide to the Birds of Washington State.
Falcon Research Group: A non-profit organization dedicated to the support of field research, public education and the conservation of birds of prey.
Mammals of Washington: Sponsored by the Burke Museum of Natural History and Culture. Organized by order.
Mammals of Washington: Information on 34 species, with photos and range maps.
Oregon-Washington Partners in Flight: Bird conservation plans, reports, and newsletters.
Wandering Albatross: Ryan Shaw's personal site with photos and trip reports.
Washington Breeding Bird Atlas: Maps for all species found during 1987-1995 survey.
Washington Hotspots: Local events, tours, rare bird alerts, print resources, and a map of birding hotspots.
Washington Ornithological Society: Meetings, field trips, checklists, publications, photo gallery, rare bird alert, and sightings requests.