The breeding behavior of free living Red crowned Cranes was observed at Zalong Nature Reserve by instantaneous and scan sampling, focal animal sampling and all occurrence recording methods.

• 采用瞬时扫描取样法、焦点动物取样法和所有事件取样法对扎龙国家级自然保护区内野生状态下丹顶鹤繁殖行为进行了观察。