【摘要】 通过对散放条件下丹顶鹤繁殖行为的观察 ,掌握了其交配、筑巢、产卵、孵化、育雏等生态习性。观察表明 :在繁殖期的开始日期、雏鸟成活率、迁行徙、针对人的防御行为和巢址选择等 5个方面 ,散放丹顶鹤与野生丹顶鹤的行为存在显著不同更多还原

【Abstract】 The breeding behavior of semi-free red-crowned crane was observed, including mating, nest building, egg-laying, hatching and nestling breeding, etc. The result indicated that there were obvious differences between semi-free red-crowned crane and wild one on following five respects: the beginning date of breeding, survival rate of nestling, migration, defending behavior against human and nest-site selection.更多还原