MARSHFIELD, WI (OnFocus) – Visitors to Wildwood Zoo may notice a new feature in the bison habitat: an “Easy Way” fly control scrape. The installation provides much more than relief from summer pests. It doubles as a source of environmental enrichment and mineral supplementation, supporting the health and well-being of the zoo’s six resident bison.
The decision to install the system stemmed from observations of natural bison behavior.
“Bison often scratch on trees, posts, or fences to relieve irritation from flies or shedding fur. We wanted to offer a healthier, more targeted alternative that builds on this instinct,” said Zoo Manager Kyle Kirk. “This was the first year that we’ve received reports of the bison being bothered by the flies, so we made the decision to purchase the fly scrape.”
The “Easy Way” system functions as a rubbing station infused with a mineral-oil-based insecticide. When bison rub against the structure, the solution is applied directly to their hide, providing low-stress fly control without the need for direct handling. The station also dispenses essential minerals such as copper, zinc, and selenium, which are vital for maintaining coat health, immunity, and parasite resistance.
Initial reactions from the herd were cautious but positive.
“At first, they were curious but cautious—typical behavior when anything new is added to their environment. Within a few days, though, a couple of the bison started rubbing on it, and soon the others followed. It became part of their routine surprisingly quickly,” Kirk noted.
Since then, all six bison have incorporated the fly scrape into their daily activities, particularly during mornings and late afternoons when flies are most active. Some use it for a full-body rub, while others target specific areas such as the shoulders or neck.
Beyond its health benefits, the fly scrape has subtly influenced the herd’s social dynamics.
“Interestingly, it’s created a bit of a social hub—sometimes you’ll see two or three bison using it in succession, almost like a queue. It hasn’t led to any serious competition, but it’s added a new layer to their interactions and routines,” Kirk said.
The addition reflects Wildwood Zoo’s commitment to enrichment practices that encourage natural behaviors in managed species.
“Environmental enrichment is key to promoting natural behaviors and reducing stress in managed animals,” Kirk explained. “For bison, enrichment like scratching posts, fly scrapes, or varied terrain allows them to express instincts like wallowing, rubbing, and roaming. This leads to better physical health and more natural social behavior.”
Visitors can now look forward to seeing the bison enjoying this innovative addition to their habitat — a tool that keeps them comfortable, healthy, and thriving.
Author: News Desk
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