(Undated) -- The Iowa Department of Natural Resources is asking trappers who happen to catch a live gray fox, to contact them. The DNR wants to put collars on gray foxes to track them, as part of a study about the declining numbers of the species.
DNR Furbearer Biologist Vince Evelsizer says the red fox is the most common type of fox in the state. He says the gray fox is smaller and can be found in forests in the eastern half of the state. He notes, however, the numbers of grays has been dropping and researchers are trying to find out why.
“We’re asking trappers who happen to catch a gray fox alive to contact me or wildlife technician Dave Hoffman directly so we can make arrangements to equip the animal with a neck collar and release it for tracking purposes as part of a research project. If they can’t reach us, another option is to contact their local wildlife biologist or conservation officer,” said Evelsizer.
Hoffman’s cell number is 641-425-0737; Evelsizer’s is 641-231-1522.
“Our gray fox population is down and we’re concerned. At this time, the cause for their population decline is unknown. We’re hoping this study will give us some data related to causes of mortality, habitat use, home ranges, etc., that we can begin to learn more about what is going on with this population.”
The DNR says gray fox population in Iowa and other Midwestern states has declined over the past 25 years. In Iowa, the population decline is correlated with increases in the population of coyotes, raccoons, and bobcats. Increasing coyote and bobcat populations may affect gray fox populations through competition and predation. Raccoons may impact gray fox populations through the spread of disease, particularly canine distemper virus. Canine distemper is common in raccoons, and gray fox are highly susceptible to this lethal disease.
Changes in Iowa’s forest habitat may also be a factor in the lower gray fox numbers.
Evelsizer said they are offering a $400 reward as an incentive for live-caught foxes that are healthy and used for the study.