(Radio Iowa) – The Iowa D-N-R has captured its second gray fox and outfitted it with a tracking collar as part of its study to figure out why the animal’s numbers have fallen. Wildlife biologist Vince Evelsizer says the loss of the woodland habitat and competition for den sites with other wildlife may be one of the causes. There have been fewer than 10 confirmed gray fox sightings in Iowa. Wildlife research technician, Dave Hoffman, says the G-P-S collars paired with trail cameras, will give them a lot of data to help them learn a lot of things about the wolves that they’ve never studied before in Iowa.