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Rominger, E.M.; Whitlaw, H.A.; Weybright, D.L.; Dunn, W.C.; Ballard, W.B.
The influence of mountain lion predation on bighorn sheep translocation
2004 Journal of Wildlife Management (68): 993-999
We studied the effecgts of mountain lion (Puma concolor) predation on 2 translocated populations of bighorn sheep (Ovis canadensis) in New Mexico, USA. During 1993, 32 Rocky Mountain bighorn sheep (O.c.canadensis) were translocated to Wheeler Peak Wilderness Area in northern New Mexico, and during 1992-1993, 31 desert bighorn sheep (O.c.mexicana) were translocated to Sierra Ladron in central New Mexico. We monitored both populations from release through 2000 using fixed-winged aircraft and ground and/or helicopter surveys. We dtermined cause of mortality for radiomarked individuals (n=26) and calculated survial rates, cause-specific mortality rates, exponential growth rates, and lamb:ewe ratios.
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