Barred Owl at Greenlake by D. Eric Harlow 2010
Regional:
Puget Sound Seabird Survey (PSSS)
Washington Birds Breeding Phenology Project (formerly Burke Museum’s nest records database)
Continental:
Monitoring Avian Productivity and Survivorship (MAPS)
North American Breeding Bird Survey (BBS)
Breeding Biology Research and Monitoring Database (BBIRD)
Migration Projects: North American Migration Count, Hawk Counts & Shorebird Counts
