Breeding ecology and behavioral rhythm of Grus nigricollis in Shenza,Xizang
The black-necked crane(Grus nigricollis)belongs to the national first-class protected wild animals.In June 2022,the research team conducted a reproductive ecological study on the black-necked cranes in Shenza County,Nagqu City,Xizang Autonomous Region.By using the focus animal sampling method,the daily behavior of the black-necked cranes during incubation and brooding periods was observed,and their behavioral time allocation and behavioral rhythm were analyzed.In the incubation period,foraging behavior accounted for 43.51%of the total daily behavior time,hatching behavior accounted for 21.18%,rest behavior accounted for 20.52%,warning be-havior accounted for 9.22%,and grooming behavior accounted for 5.57%.In the brooding period,the main daily behavior of the black-necked cranes was feeding,accounting for 86.60%of the total daily behavior time,and nest-ing behavior accounted for 13.40%.The results showed that the daily behavior time allocation of the black-necked cranes during incubation and brooding periods reflected the adaptation of the black-necked cranes to the local natu-ral environment,and increased the possibility of successful reproduction and survival.
incubation periodbrooding perioddaily behavior time allocationpopulation size
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