Offer Birds Housing We teach you how Development has destroyed much of the bluebird preferred habitat. We monitor nestboxes for bluebirds and other cavity nesting birds. Join us in making a difference! Learn More Western Bluebird feeding nestlings. Photo: Jerry James Since 1994 The California Bluebird Recovery Program monitors thousands of bird boxes every year supporting over 400,000 fledglings! Western Bluebirds, female and male.Photo: Steve Kaye Latest News: Added 2024 Summer Newsletter Added 2023 Annual Report Added 2024 Winter Newsletter Updated State Results for 1996-2023 Updated Trail-Level Data for 2023