A BIOTELEMETERY STUDY OF SURVIVAL OF PEN-REARED PHEASANTS RELEASED IN SELECTED HABITATS
A BIOTELEMETERY STUDY OF SURVIVAL OF PEN-REARED PHEASANTS RELEASED IN SELECTED HABITATS
复制标题
对选定栖息地放养的圈养雉鸡生存情况的生物遥测研究
DOI：
10.2307/3799010
复制
发表时间：
1970
影响因子：
2.3
通讯作者：
M. M. Nelson
中科院分区：
文献类型：
--
作者：
E. Hessler;J. Tester;D. Siniff;J. Ford;M. M. Nelson
少年游戏农场雉（Phasianus colchicus）配备无线电发射器被释放在最佳和边缘的栖息地在明尼苏达州南部和中部，分别。这些释放是为了研究在明尼苏达州一日龄雏鸡计划中饲养和放养的野鸡的存活率和死亡原因。在74只鸟被释放后的28天里，有60只（81%）死亡。在释放后的28天内，死亡原因包括捕食（55），未知（3），饥饿（1）和农业机械（1）。主要捕食者有红尾鹰（Buteo jamaicensis）、大腹鸮（Bubo virginianus）、赤狐（Vulpes fulva）和水貂（Mustela vison）。有两种栖息地类型释放的鸟类之间的生存没有差异。两性的存活率相似。体重低于中位体重的母鸡比体重高于中位体重的母鸡存活率高（P < 0.01）。雄雉没有观察到这种与体重相关的死亡率差异。狐狸捕食高于粪便和消化道分析狐狸的食物习惯会表明。狩猎场的鸟类分散得很慢，似乎在利用栖息地的边缘。阻止他们生存的因素似乎与行为库的缺陷有关。被放归野外的猎场野鸡的命运一直是人们争论的话题，
Juvenile game-farm pheasants (Phasianus colchicus) equipped with radio transmitters were released in optimal and marginal habitats in southern and central Minnesota, respectively. The re- leases were intended to study survival rates and causes of mortality of pheasants raised and stocked in the Minnesota day-old-chick program. Of 74 birds which were tracked during the 28 days follow- ing their release, 60 (81 percent) died. Causes of death during the 28 days post-release, included predation (55), unknown (3), starvation (1), and farm machinery (1). The major predators in- cluded red-tailed hawk (Buteo jamaicensis), great-homed owl (Bubo virginianus), red fox (Vulpes fulva), and mink (Mustela vison). There was no difference in survival between birds released on the two habitat types. Survival of sexes was similar. Hens weighing less than the median weight on re- lease survived better (P < 0.01) than hens weighing more than the median weight. No such weight- related differential mortality was observed for cock pheasants. Fox predation was higher than scat and digestive track analyses of fox food habits would have indicated. Game-farm birds dispersed very slowly and appeared to exploit habitat edges. Factors preventing their survival appeared to be con- cerned with deficiencies in the behavioral repertoire. The fate of game-farm pheasants released into the wild has been the subject of con-