The territories and territrial behavior of White-naped Crane and Red-crowned Crane were studied in Rindian County of Heilongjiang province from March to May in 1986-1988.Eight territories of White-naped crane and six ...The territories and territrial behavior of White-naped Crane and Red-crowned Crane were studied in Rindian County of Heilongjiang province from March to May in 1986-1988.Eight territories of White-naped crane and six of Red-crowned Crane were investigated.The results show that two species have successtively occupied the same territory for many years.The maximum size of occupied territory by Red-crowned Crane is 4.0 km 2 with the average of 3.65 km 2 and by White-naped crane is 10.7 km 2 with the average of 7 km 2.During most period of breeding, the size of territories of two species were gradually reduced to less than 1.5 km 2 until nesting period ,The area of territories of White-naped Crane with fixed foraging crop field is smaller than that of the territories without crop field.展开更多
文摘The territories and territrial behavior of White-naped Crane and Red-crowned Crane were studied in Rindian County of Heilongjiang province from March to May in 1986-1988.Eight territories of White-naped crane and six of Red-crowned Crane were investigated.The results show that two species have successtively occupied the same territory for many years.The maximum size of occupied territory by Red-crowned Crane is 4.0 km 2 with the average of 3.65 km 2 and by White-naped crane is 10.7 km 2 with the average of 7 km 2.During most period of breeding, the size of territories of two species were gradually reduced to less than 1.5 km 2 until nesting period ,The area of territories of White-naped Crane with fixed foraging crop field is smaller than that of the territories without crop field.
