Brown eared-pheasant Crossoptilon mantchuricum is endemic to China, an d mainly occurs in Luliang Mountains of Shanxi, Xiaowutai of Hebei and Huanglong of Shaanxi. Reintroduction of Brown eared pheasant was carried ou...Brown eared-pheasant Crossoptilon mantchuricum is endemic to China, an d mainly occurs in Luliang Mountains of Shanxi, Xiaowutai of Hebei and Huanglong of Shaanxi. Reintroduction of Brown eared pheasant was carried out from April t o December in 2000. According to the criterions of release site selection in Gui delines for Reintroductions of IUCN, and habitat selection of Brown eared pheasa nt, Kuantan forestry in Wutaishan Mountains of Shanxi Province was selected as t he release site. Of the 8 released individuals, 5 wild individuals were captured in winter in Luyashan Nature Reserve of Shanxi Province, and 3 were offsprings of captive-reared individuals. Transmitters were attached when the 8 individua l s were released. Overall, 6 individuals survived for at least 1 month, and the l ongest time for survival was 155 days, except that one was confirmed as having b een killed by a raptor on the second day and one was lost on the eighth day afte r release. All moved away from the release site after release and established st able home ranges in different sites after 10 days, respectively. In early May, t he individuals again dispersed to establish new home ranges. The wandering dist ance and days of the captive individuals were longer and the home range size wer e larger than that of the wild birds, which resulted from the weak adaptability to new habitat for the captive individuals, such as recognizing and fetching foo d. For wild individuals, the second wandering distance was longer than the first . We believe the difference was related to looking for partners. After wandering , individuals established stable home ranges in different sites .展开更多
This experiment was designed to find out the influence of food distribution and feeding condition on feeding behavior and fighting of Crossoptilon mantchuricum .The food distribution had 3 levels:scattered,clustered a...This experiment was designed to find out the influence of food distribution and feeding condition on feeding behavior and fighting of Crossoptilon mantchuricum .The food distribution had 3 levels:scattered,clustered and terrifically clustered.The feeding condition has 2 levels:hungry and half hungry.When the C. mantchuricum were hungry,the frequency of biting at feeding was more significant than that when they were half hungry.The distribution of food had significant influence on hungry birds while it did not work for half hungry birds unless the food was terrifically clustered.The abundance and distribution of resource had some influences on the resource allot and dominant behaviour in the flock of C.mantchuricum .Most of fighting occurred between the dominant and subdominant C.mantchuricum and in subdominant ones.About 47% of biting occurred on the periphery far from food.In order to prevent subdominant birds from getting inside to feed, dominant birds occasionally wandered outside to attack subdominant ones waiting for food.A lot of biting occurred between subdominant birds.We assume that they could confirm their status by biting,and then minimize competitions from more subdominant ones.展开更多
文摘Brown eared-pheasant Crossoptilon mantchuricum is endemic to China, an d mainly occurs in Luliang Mountains of Shanxi, Xiaowutai of Hebei and Huanglong of Shaanxi. Reintroduction of Brown eared pheasant was carried out from April t o December in 2000. According to the criterions of release site selection in Gui delines for Reintroductions of IUCN, and habitat selection of Brown eared pheasa nt, Kuantan forestry in Wutaishan Mountains of Shanxi Province was selected as t he release site. Of the 8 released individuals, 5 wild individuals were captured in winter in Luyashan Nature Reserve of Shanxi Province, and 3 were offsprings of captive-reared individuals. Transmitters were attached when the 8 individua l s were released. Overall, 6 individuals survived for at least 1 month, and the l ongest time for survival was 155 days, except that one was confirmed as having b een killed by a raptor on the second day and one was lost on the eighth day afte r release. All moved away from the release site after release and established st able home ranges in different sites after 10 days, respectively. In early May, t he individuals again dispersed to establish new home ranges. The wandering dist ance and days of the captive individuals were longer and the home range size wer e larger than that of the wild birds, which resulted from the weak adaptability to new habitat for the captive individuals, such as recognizing and fetching foo d. For wild individuals, the second wandering distance was longer than the first . We believe the difference was related to looking for partners. After wandering , individuals established stable home ranges in different sites .
文摘This experiment was designed to find out the influence of food distribution and feeding condition on feeding behavior and fighting of Crossoptilon mantchuricum .The food distribution had 3 levels:scattered,clustered and terrifically clustered.The feeding condition has 2 levels:hungry and half hungry.When the C. mantchuricum were hungry,the frequency of biting at feeding was more significant than that when they were half hungry.The distribution of food had significant influence on hungry birds while it did not work for half hungry birds unless the food was terrifically clustered.The abundance and distribution of resource had some influences on the resource allot and dominant behaviour in the flock of C.mantchuricum .Most of fighting occurred between the dominant and subdominant C.mantchuricum and in subdominant ones.About 47% of biting occurred on the periphery far from food.In order to prevent subdominant birds from getting inside to feed, dominant birds occasionally wandered outside to attack subdominant ones waiting for food.A lot of biting occurred between subdominant birds.We assume that they could confirm their status by biting,and then minimize competitions from more subdominant ones.
