Fall Wildlife Activity Is Spiking — And Hunting Season Just Raised the Stakes for Field Crews

Two things happen at the same time every fall: the animals get more aggressive, and the number of armed people in the same terrain goes up.

Why does wildlife activity spike every fall?

Two biological triggers run in parallel through September and October, and they don't affect wildlife the same way.

The first is the rut. Elk in Alberta start breeding activity around September 1, with the peak almost always landing close to the autumnal equinox and continuing into mid-October. Moose run about three weeks behind, rutting from late September into mid-October with the sharpest activity in the first two weeks of the month. Deer come later still, rutting from late October through December and peaking around mid-November. Testosterone makes bull elk and bull moose measurably more aggressive toward anything that crosses their path. Not just other males. A crew truck. A survey party on foot.

The second trigger is bears entering hyperphagia, the pre-hibernation feeding phase that starts in late summer and runs through September into October. A black bear in hyperphagia can forage close to 20 hours a day and needs to add roughly 30% to its body weight before denning. That means more bears, more often, closer to cutblocks, seismic lines, and roadside brush where berries and mast are still available. And a bear locked into feeding mode is paying less attention to an approaching crew than it would in July.

What does that actually mean for a crew working outside right now?

Two separate categories of risk go up at once: direct wildlife encounters and highway wildlife strikes. Both peak in the exact weeks most field programs are racing to finish the season before the ground freezes.

Direct encounter risk rises because rutting bulls and hyperphagic bears are both less predictable than usual, not because either is seeking out humans. A bull elk mid-rut will charge a vehicle it wouldn't have looked at twice in August. A bear focused on a berry patch may not register an approaching worker until much closer than it normally would.

The second category is wildlife-vehicle collisions, and the data here is unambiguous. Collisions peak in October and November, driven by rut movement, migration to winter range, and animals shifting out of harvested cropland. About 72% of deer-vehicle collisions cluster between October and December, with November alone accounting for roughly a quarter of the annual total. The highest-risk windows are dawn and dusk, specifically 5–8pm and 6–7am, which lines up almost exactly with shift-start and shift-end driving for crews working on daylight hours that are shrinking by the week.

For crews doing highway or resource-road driving as part of the job, which is most field crews, that's a defensive-driving conversation that needs to happen every fall. Not a line in an orientation package from three years ago that nobody's opened since.

A bull elk mid-rut will charge a vehicle it wouldn't have looked at twice in August.

How does hunting season compound the risk?

This is the piece most safety programs miss entirely, and it stacks directly on top of the wildlife activity above rather than replacing it.

Big game rifle seasons run through most of this same window across the provinces where field crews are busiest. In Alberta, fall licences go on sale in early August, and archery and rifle seasons for deer, elk, and moose run through the fall by wildlife management unit. In British Columbia, general deer season opens in early September under the current hunting and trapping regulations synopsis. In Ontario, gun season for deer, elk, and moose triggers a legal requirement for licensed hunters to wear hunter orange, a garment covering at least 400 square inches above the waist, under O. Reg. 665/98.

That requirement doesn't extend to non-hunters. A forestry crew, a survey party, or a lineworker walking a right-of-way in the same wildlife management unit during gun season has no legal visibility requirement at all. Standing in standard navy or drab-coloured coveralls, that crew reads as movement in the brush and nothing more.

The accident pattern backs this up. A 2015 human-factors review of mistaken-for-game hunting incidents found the most common scenario involves an experienced hunter shooting someone at roughly 35 metres, in broad daylight. Not a low-visibility night incident. A daylight misidentification. Ontario Provincial Police documented six accidental shootings in the first week of one recent deer season alone. Jurisdictions that mandate hunter orange report up to a 50% drop in vision-related hunting incidents, and that number exists because visibility, not luck, is what closes the gap between "hunter sees movement in the brush" and "hunter sees a person."

What should a crew actually do about it?

Four controls, layered onto work that's already happening. Most cost nothing beyond a few minutes in the field-level hazard assessment.

Start with the hazard assessment itself. If your seasonal FLHA or JHA doesn't have a line item for wildlife activity and hunting season overlap between September and December, that's a gap that surfaces the first time someone asks whether anyone checked the WMU hunting calendar before the crew went out. We see this gap constantly: an FLHA written for spring or summer conditions, filed once, and never revisited for fall. Adding the line item costs nothing and takes ten minutes.

Visibility comes next, and it needs to be solid-colour blaze orange, not just standard fluorescent hi-vis. CSA Group's Z96 standard governs high-visibility safety apparel for Canadian workplaces, but its fluorescent yellow-green and orange are optimized for visibility against equipment and traffic backgrounds. Hunter orange is a different, deeper shade, chosen specifically to stand out against fall foliage and to read clearly through a hunter's field of view. A vest that satisfies CSA Z96 for a roadside job doesn't automatically satisfy the reason hunter orange exists. Where a crew works in an active WMU during gun season, add a dedicated blaze-orange vest or hard hat cover on top of whatever PPE the job already requires.

Timing is a real lever too. Where the work allows it, shift activity away from the dawn and dusk windows, the same 6–7am and 5–8pm hours that drive both the collision data and the worst hunting-visibility conditions. That's not always possible on a fixed schedule. Where there's flexibility, it's the highest-value, lowest-cost change on this whole list.

Finally, treat driving as its own hazard category through this window, separate from the on-foot risk. A pre-trip reminder about wildlife-vehicle collision risk, reduced speed on resource roads at dawn and dusk, and scanning the shoulders instead of just the road surface are the same defensive-driving habits that reduce collision severity in every other season. They just matter more right now.

A vest that satisfies CSA Z96 for a roadside job doesn't automatically satisfy the reason hunter orange exists.

Building it into the program, not just this month

The employers who handle this well don't treat it as a one-off toolbox talk in September. They build a seasonal addendum into the safety program that triggers automatically, tied to the calendar instead of to someone remembering.

That means the wildlife and hunting-season hazard assessment gets reviewed and reissued every year before archery season opens in late August, not whenever someone happens to think of it. It means whoever owns the FLHA process has a standing task to pull the current WMU hunting calendars for every active work area. And it means new or seasonal staff, the people most likely to be in the field for the first time this exact week, get the wildlife and hunting-season briefing as part of orientation instead of picking it up secondhand from whoever mentions it first.

None of this is complicated. It's the same discipline that gets cold stress managed in January and heat stress managed in July, instead of just written down somewhere and forgotten. Fall wildlife and hunting season deserve the same treatment. Most programs still don't give it to them.