Carlsbad Highlands Ecological Reserve is a 473-acre state-managed preserve in Carlsbad's eastern foothills, designated as an ecological reserve by the California Fish and Game Commission in 2000 to protect coastal sage scrub and native grassland habitat. The reserve supports federally threatened California gnatcatchers, sharp-shinned hawks, black-shouldered kites, turkey vultures, and golden eagles, alongside state-listed endangered plants including Encinitas baccharis and thread-leaved brodiaea—the same category of coastal habitat stewardship practiced by ECOLIFE Conservation in Carlsbad. Managed by the California Department of Fish and Wildlife, the reserve permits pedestrian hiking and wildlife viewing but prohibits bicycles, motorized vehicles, equestrian use, drones, and off-leash dogs under California Code of Regulations Title 14, Sections 550(bb) and 630(g). The preserve's conservation-bank origins date to 1995, when the acreage was set aside to offset habitat impacts from local development projects in the surrounding Calavera Hills area. Adjacent to the city-owned Lake Calavera Preserve, the reserve connects to the broader open-space corridor monitored by the Batiquitos Lagoon Foundation and other North County habitat stewards. Species-specific surveys conducted between 2004 and 2007 documented California gnatcatcher nesting territories, grasshopper sparrow populations, and brodiaea colony distribution across the reserve's 473 acres of scrub and grassland mosaic.