Causes and rates of mortality of swift foxes in western Kansas

Journal of Wildlife Management
By: , and 



Knowledge of mortality factors is important for developing strategies to conserve the swift fox (Vulpes velox), a species being considered for listing under the Endangered Species Act, but available information about swift fox mortality is inadequate. We used radiotelemetry techniques to examine the magnitude and causes of mortality of swift fox populations in 2 study areas in western Kansas. One study area was predominantly cropland, the other rangeland. Mortality rates, calculated using Kaplan-Meier estimation techniques in a staggered entry design, were 0.55 ?? 0.08 (5 ?? SE) for adult and 0.67 ?? 0.08 for juvenile swift foxes. We did not detect differences between study areas in mortality rates for adults or juveniles. Predation by coyotes (Canis latrans) was the major cause of mortality for adult and juvenile swift foxes in both study areas, and vehicle collision was an important mortality factor for juveniles in the cropland study area. No mortality was attributed to starvation or disease.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Causes and rates of mortality of swift foxes in western Kansas
Series title Journal of Wildlife Management
DOI 10.2307/3801994
Volume 62
Issue 4
Year Published 1998
Language English
Publisher Wildlife Society
Contributing office(s) Northern Prairie Wildlife Research Center
Description 7 p.
First page 1300
Last page 1306
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