| effectiveness of action to reduce exposure of free-ranging california condors in arizona and utah to lead from spent ammunition. | california condors (gymnogyps californianus) released into the wild in arizona ranged widely in arizona and utah. previous studies have shown that the blood lead concentrations of many of the birds rise because of ingestion of spent lead ammunition. condors were routinely recaptured and treated to reduce their lead levels as necessary but, even so, several died from lead poisoning. we used tracking data from vhf and satellite tags, together with the results of routine testing of blood lead conce ... | 2008 | 19107211 |