Seattle Audubon's Birdweb provides in-depth information about the birds of the state and where to find them. This includes in which habitats, in which regions, in which months and with what frequency each species is found. It also provides information about behavior, nesting, diet and migration and conservation status.
The Washington Ornithological Society (WOS) has much birding information including checklists, site guides and searchable newsletter archives.
Recent eBird Sightings