Yellow-throated Warbler, Setophaga dominica, New World warbler family Parulidae. These birds breed in SE North America, and their breeding ranges extend from southern Pennsylvania and northern Missouri, to the Gulf of Mexico.
Per Previous Pinner: Yellow Billed Magpies have an extremely limited range, living only on the California Central Coast and Central Valley. They are found nowhere else on earth. I found this one in the Santa Ynez Valley, Ca. near the town of Los Olivos.