近日，超2000只国家二级保护动物斑头秋沙鸭在河北省沧州市南大港湿地和鸟类自然保护区集结北迁。这是南大港湿地和鸟类自然保护区有观测记录以来，斑头秋沙鸭种群规模最大的一次集中活动。
斑头秋沙鸭素有“熊猫鸭”的美誉，对栖息地要求极为苛刻，此次观测到超过2000只斑头秋沙鸭出现，不仅刷新了区域观测记录，也反映出南大港湿地生态功能的提升。
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