深圳湾公园红树林自然保护区

This guide to the mangrove nature reserve on Shenzhen Bay opens in the 1990s, when ornithologists counted the black-faced spoonbill and found fewer than three hundred left in the world, driven from their nesting grounds by decades of coastal reclamation. You'll hear how the survivors kept returning each autumn to this narrow strip of mangroves along the great flyway between Siberia and Australia, and how Shenzhen's planners rerouted a coastal road inland to spare the trees during the city's rapid growth. Scan the mudflats between October and April, when migratory birds pass through the only national nature reserve in China that lies entirely inside a city.