The detected image was captured by video monitor.

According to observation statistics, the first group of black-necked cranes have arrived at Xundian Black-necked Crane Reserve in Yunnan province for winter on November 9.  

Black-necked cranes have arrived at Xundian Black-necked Crane Reserve for winter. 

With the help of video monitor, staff of this reserve made a judgement based on the physical characteristics that this group of black-necked cranes consists of three adults birds and one two-year-old young. 

Black-necked cranes have arrived at Xundian Black-necked Crane Reserve for winter. 

Since the end of October, the reserve staff have made preparations to welcome wintering black-necked cranes. The number of cranes is expected to increase gradually in the following month. 

Black-necked cranes have arrived at Xundian Black-necked Crane Reserve for winter. 

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(Editors: Alison,Rachel)