Coyotes are ready to mate at 20 to 22 months old. More people are killed by errant golf balls and flying champagne corks each year than are bitten by coyotes. If coyotes are an issue, I agree with those that the only time to leave a deer overnight is when it is an obvious gut shot. When area dogs respond, coyotes may attack and kill them. They also attack rabbits and ground- nesting birds. I have on three occasions left liver shot deer for a couple of hours and them taken up the track to recover them after dark with good results. Coyotes affect deer hunting, and this year’s fawning season is almost upon us. After all, when coyotes attack deer, they invariably affect everything we do to improve our hunting properties for this year … and the years to come. (photo by Dan Schmidt) Females have a gestation period of 63 days and give birth to as many as 12 pups. Briere thinks city policies contribute to a rising population of urban wildlife. "It's what they do. But don’t jump to conclusions just yet. Coyotes take their biggest toll on fawns, but that has not kept whitetail deer from thriving in one of the most coyote-rich areas in the world, South Texas. "We've chosen to embrace our natural areas. A home surveillance camera captured a frightening moment last week when a coyote attacked a toddler in the backyard of a home in Canada. Often, coyote attacks are preventable by modifying human behavior and educating people about ways to prevent habituation. I track other hits that night. When they are hunting, coyotes often howl. Colleagues from the Illinois Natural History Survey conducted a fawn survival study in multiple locations within the Chicago area and found that coyotes killed 20 percent to 80 percent of the fawns in these various populations. Coyotes are pack animals, and as a pack they'll pick out the ill, the young, and the old." In the wild, coyotes can live around 10 years. "Coyotes attack deer," Briere explains by phone. As aside to the ongoing research on predators, coyotes are not alone in causing havoc on deer … Although coyotes rarely take adult deer, they are primary predators of deer fawns. Coyote attacks on people are very rare. According to research on stomach samples conducted by Shippensburg University, coyotes do indeed eat deer more than anything else. There is some evidence of coyotes hunting adult deer in areas without snow, but this is not well documented.. Studies from northern areas show during mild winters coyotes kill less deer and switch to other prey like snowshoe hare(2), and it is hard for coyotes to kill adult deer without snow to slow and exhaust deer. I believe night tracking is easier in some ways. Coyotes and Deer Coyotes rarely attack adult deer, but they prey on fawns. In urban areas they can live longer. Deer was the most prevalent food item – occurring in 62 percent of the 98 coyote stomachs that were sampled. A look at 353 coyote scats collected on two public hunting areas by the University of Georgia indicated that coyotes on one of the sites switched almost exclusively to eating fawns during the fawning season. Coyotes affect deer especially during the critical first weeks of the fawning season. Coyote attacks on people. “Trapping is probably too time consuming and labor intensive for private landowners to adopt, especially when the results are uncertain,” Kilgo said.