Classified for credit

Mass Audubon education center at the gateway to Plum Island — shorebird ecology, migratory bird biology, and estuary habitat study.

Mass Audubon sanctuary on Cape Cod with salt marsh and upland trails — covers coastal ecology, bird identification, and conservation biology.

Mass Audubon urban nature center on the Charles River — urban wildlife ecology, river biology, and environmental stewardship for younger learners.

Mass Audubon education center with bird art gallery and wildlife sanctuary trails — ornithology, ecology, and natural-history illustration.

Mass Audubon sanctuary on a restored cranberry bog — covers wetland ecology, habitat restoration, and native wildlife biology in a protected reserve.

Mass Audubon sanctuary with meadow, wetland, and forest habitats — supports field ornithology, plant ecology, and wildlife conservation education.

Mass Audubon wildlife sanctuary featuring holly collections and bird habitat — covers plant ecology, ornithology, and native species conservation.

Urban wildlife sanctuary with trails, native plantings, and Audubon-led programs covering bird identification, ecology, and habitat restoration.

Mass Audubon wildlife sanctuary with trails and a conservation center — covers local bird ecology, wetland biology, and wildlife habitat in Central MA.

Mass Audubon wildlife sanctuary with guided trails — covers bird identification, wetland ecology, and native plant communities.

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

Mass Audubon wildlife sanctuary with self-guided trails — field study of woodland bird species, wetland ecology, and conservation biology.

Mass Audubon coastal sanctuary on Gloucester Harbor — covers shorebird ecology, marine habitat, and migratory bird identification along the Essex County coast.

Mass Audubon sanctuary on Martha's Vineyard with salt marsh and upland trails — supports bird biology, coastal ecology, and conservation science programs.

Mass Audubon sanctuary with trails through varied Central Massachusetts habitat — covers native bird identification, plant ecology, and wildlife observation.

Mass Audubon coastal wildlife sanctuary with trails and bird-observation areas covering migratory bird ecology and wetland habitat study.

Mass Audubon sanctuary with trails and wildlife education programs — covers local bird biology, habitat ecology, and conservation science.

Mass Audubon sanctuary with forest and rocky ledge habitats — covers bird identification, forest ecology, and glacial geology of western Massachusetts.

Mass Audubon sanctuary on the Ipswich River — covers freshwater wetland ecology, migratory bird identification, and conservation biology.

Mass Audubon sanctuary with trails and wildlife observation around Lake Wampanoag — supports ornithology, wetland ecology, and field biology.

Audubon-managed woodland sanctuary with self-guided trails covering forest ecology, native bird identification, and wildlife habitat conservation.

Mass Audubon sanctuary with guided and self-guided trails covering New England forest ecology, bird identification, and wildlife conservation.

Mass Audubon sanctuary in coastal Nahant — shorebird and migratory bird ecology, coastal habitat biology, and field observation skills.

Mass Audubon wildlife sanctuary with marked trails and brook habitat — field study in ecology, bird identification, and wetland biology.