Brazoria National Wildlife Refuge covers 44,414 acres of coastal prairie, wetlands, and salt marsh along Bastrop Bay south of Angleton. It is one of the most important winter waterbird refuges on the entire Texas Gulf Coast, and the concentration of birds in the November to March period can be extraordinary — snow geese by the hundreds of thousands, alongside sandhill cranes, ducks of more than twenty species, roseate spoonbills, whooping cranes (occasionally), and year-round residents including alligators, deer, and coyotes.
The refuge has a gravel auto tour loop passable in a standard car, walking trails, and several observation platforms overlooking the impoundments. The best birding is in winter, but spring and fall migration bring shorebirds and neotropical songbirds through the coastal ridge woodlands. No entrance fee is charged. The refuge is located off FM 2004 south of Angleton. A second unit, the San Bernard National Wildlife Refuge, lies 12 miles further west with similar habitat.