首次记录！“国宝级”稀客组团现身宿迁沭阳

Group 1 - The rare species, the Chinese merganser, has been recorded in Shuyang for the first time, highlighting its significance as a national first-class protected wildlife [1] - The Chinese merganser is referred to as a "living fossil" due to its survival since the Tertiary glacial period, emphasizing its unique and rare status [3] - The male Chinese merganser is noted for its stunning appearance, while the female maintains elegance, making it a representative of beauty among waterfowl [5] Group 2 - Shuyang's favorable climate and abundant water resources make it an important stopover and supply station for migratory birds [5] - The presence of various migratory birds each year indicates the ecological health of Shuyang, serving as a recognition of the region's environmental protection efforts [5]