Classified for credit

Mass Audubon sanctuary on the North River estuary with guided and self-guided trails covering salt marsh ecology, shorebirds, and riparian biology.

Mass Audubon wildlife sanctuary with trails and wetland habitat — supports bird identification, forest ecology, and conservation biology.

Mass Audubon sanctuary with meadow and wetland habitats supporting bird identification, plant ecology, and field observation skills.

Mass Audubon wildlife sanctuary with trails and beaver wetlands — covers bird biology, wetland ecology, and field identification.

Mass Audubon wildlife sanctuary with trails — covers bird ecology, forest habitats, and wildlife observation in a managed conservation area.

Mass Audubon sanctuary with maintained trails through central Massachusetts woodland and meadow — bird identification, forest succession, and wildlife habitat ecology.

Mass Audubon salt marsh sanctuary in Rowley — covers estuarine ecology, tidal biology, and migratory shorebird identification along the Parker River corridor.

Mass Audubon heathland sanctuary on Nantucket protecting rare shrubland habitat — covers coastal ecology, rare plant communities, and bird conservation.

Mass Audubon sanctuary with guided trails, beaver wetlands, and bird programming — supports ornithology and wetland ecology.

Mass Audubon sanctuary with meadows, forest, and wetlands — ranger-led programs cover ornithology, field ecology, and conservation biology.

Audubon wildlife sanctuary in the Berkshire hills with forested trails — covers New England forest ecology, bird identification, and habitat conservation.

Large natural lake and watershed area used for outdoor recreation — supports freshwater ecology, watershed geography, and PE through paddling and trail use.

Idaho state park along the Oregon Trail featuring volcanic rock formations, geology interpretation, and documented emigrant history.

Massachusetts state park with ponds and forest trails — supports freshwater ecology, native plant identification, and outdoor PE.

American Camellia Society gardens with extensive cultivar collections — supports botany, plant classification, and horticultural science.

Audubon-managed forest and stream sanctuary in coastal Maine — bird identification, riparian ecology, and conservation land stewardship.

Iowa river discovery center on the Des Moines River covering riparian ecology, watershed science, and local natural history.

Historic pump house on Lake Mattamuskeet National Wildlife Refuge — a hub for migratory waterfowl observation and wetland ecology study.

Large federal refuge on North Carolina's largest natural lake — wetland ecology, migratory waterfowl, and estuary biology.

Large CT state forest with varied habitats — supports forest ecology, tree identification, and field biology across undeveloped woodland.

University of Michigan botanical garden with conservatory and themed outdoor collections — covers plant taxonomy, ecology, and ethnobotany.

Illinois canyon and waterfall area with trails — covers sedimentary geology, erosion, riparian ecosystems, and Illinois natural history.

Riverside state park with trails along the Merrimack — plant ecology, riparian habitats, and field botany in a historic mill-town setting.

Hawaiian NWR complex supporting endangered waterbirds — island ecology, endemic species conservation, and Pacific wetland habitat biology.