Translation Yuan Liang is a 65-year-old retired middle school biology teacher. He started to investigate the avifauna in Tianjin area in 1984. Tianjin, the largest port city in North China,is bounded on the North by the Yanshan Mountain and faces the Bohai sea on the east. In its northeast corner is the National Wetland Nature Conservative Zone and in its south there is a vast water area. Its varied landforms provide an ideal home for many rare birds. Yuan's investigation has been conducted in difficult circumstances. Over the past 15 years,he has accumulated many authentic records and photos, providing valuable first-hand information for avifauna study.