Birds Oregon Department of Fish & Wildlife
Notes from the Field: The Jays — Central Oregon LandWatch
Urban Crows - Portland Audubon
8 Types of Corvids Found in Oregon (Crows, jays) - Bird Watching HQ
Shrikes, Jays and Crows of Columbia County, Oregon – Wild Columbia County
Common Raven - Montana Field Guide
Jays, Crows, and Magpies — Sacramento Audubon Society
ODFW Recreation Report: Northwest Zone
For the Birds: Caution is best strategy with sick birds at feeders
Crows, Jays and Magpies Oregon Department of Fish & Wildlife
Shrikes, Jays and Crows of Columbia County, Oregon – Wild Columbia County