Although controversial, supplemental, diversionary or intercept feeding can be successfully used to discourage problem bear behaviour, as well as to prevent bears from debarking trees (Ziegltrum 2004, 2008) or preying on livestock. In Slovenia, bear damage in diversionary feeding areas was only a third that in non-feeding areas (Klenzendorf 1997).
One of the biggest reasons for increased bear activity in residential areas is a seasonal shortage of natural foods in the nearby woods. Establishing select feeding sites can be effective in these situations, but it’s important to have a defined goal, a specific plan and a limited feeding program.
Ben Kilham, black bear rehabilitator, realized early on that it’s all about food. There’s nothing that will motivate a bear better than food, but the problem is that very little work has been done experimenting on developing effective ways to use it. It seemed that all the creative thinking stopped when the words “food-conditioned” and “habituated” started being used to describe problem bears. Nobody wanted to push bear control efforts in the direction of the problem itself. But when bears are already food-conditioned and habituated, Kilham asks; “how can you do any further harm by manipulating their behaviour using food?” – Ben Kilham in Among the Bears: Raising Orphan Cubs in the Wild
Ben Kilham (author of Among the Bears) suggests using the same food the bears are feeding on in someone’s backyard, only delivered to them deep in the woods in good cover. Given a choice, bears will always take food at a more secure location. Wild animals killed by cars and trains have also been used.
Appropriate feeding sites must be secure: remote, in good cover and not readily accessible to hunters or well-meaning wildlife watchers. A good natural water source should be nearby. If it’s done correctly, bears will communicate the whereabouts of relocated food sites, making it cost effective to maintain the needed bait sites.
An attempt to feed a specific bear is unlikely to work if there are other bears in the area. Younger, less dominant bears may be displaced and may begin getting into trouble elsewhere – a situation where good intentions can go awry. However, a sufficient food supply in several different locations will prevent dominant bears from controlling bait sites and disrupting the social hierarchy in the bear community.
Diversionary feeding has become a controversial option because bear managers are concerned that using unnatural bear foods (albeit strategically located and delivered) will create habituated, food-conditioned bears that might become nuisances or jeopardize public safety. However, at least one study in Minnesota indicates that this is not the case.
In fact, diversionary feeding provided an opportunity for residents to meet the bears they feared and to develop more tolerant attitudes. Diversionary feeding reduced nuisance problems despite the fact that the bears were habituated and food-conditioned. The fact there was also continued availability of garbage in potential problem areas indicates that any efforts to mitigate problems by reducing attractants and/or aversive conditioning are likely to be more successful if coupled with diversionary feeding.
“There is a need for decision-makers to re-evaluate policies toward habituated bears, recognizing that habituation is a normal response to people in the bear’s increasingly fragmented environment and that habituated bears have not shown themselves to be a greater threat to public safety than non-habituated bears,” says Dr. Lynn Rogers, who conducted the study. “There is also a need for further study to determine the situations in which diversionary feeding can be most effective in mitigating human-bear conflict.”
Diversionary feeding is a temporary solution and is difficult to sustain over long periods of time (as it is costly and requires manpower resources to implement). It can, however, be considered during massive natural food failures. Over the long term, the only real cure to residential bear problems is for people to clean up food or garbage that may attract bears.
For more information, study: “Does Diversionary Feeding Create Nuisance Bears and Jeopardize Public Safety? ” by Dr. Lynn Rogers
There are so many misconceptions about diversionary feeding. Where natural foods are scarce, “tid-bit” feeding leads bears into trouble—going house to house. Substantial, reliable diversionary feeding, using preferred foods, is a powerful tool that leads bears out of trouble. Supplemental food enables bears to mature and reproduce at ages that more closely approach bears’ biological potential, but males disperse as usual and females continue to hold territories. In studies of diversionary feeding, bears did not become more aggressive as some have predicted. They became calmer and more tolerant of people. ~ Dr. Lynn Rogers
“Behavior, wild diets and weight gains of supplementally-fed black bears in northeastern Minnesota,” by Susan A. Mansfield (Department of Environmental Studies, Antioch New England Graduate School, Keene, New Hampshire) and Lynn L. Rogers (Wildlife Research Institute, Ely, Minnesota). This study compares bears receiving supplemental food with those in a nearby study area where bears were not supplementally fed (Rogers 1987; Rogers, unpublished data).
Learn how a controlled program of diversionary feeding helped bears.
Disclaimer: Such a program should not be attempted at home in your own backyard. However, in times of severe food shortages, this option should be considered by wildlife officials as an alternative to killing bears and other wildlife. There is no doubt it works.