TUCSON, Ariz. (AP) -- State wildlife officials say another bighorn sheep has died in the Catalina Mountains north of Tucson.That means 17 of the 31 bighorns originally relocated from the Yuma area last November now are dead.The Arizona Game and Fish Department is overseeing an effort to rebuild a bighorn herd that disappeared from the Catalinas in the 1990s.Agency officials say the bighorn found dead Wednesday was a ewe. They say there wasn't any obvious sign of trauma and the cause of death is unknown.Wildlife officers say most of the previous bighorn deaths were due to mountain lions.They say 30 of the 31 sheep were outfitted with GPS collars. Twelve of the remaining 13 collared sheep are known to be alive and one of the collars may be malfunctioning.
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