Daylight saving time ends Sunday and Colorado Parks and Wildlife is warning residents to beware of wildlife-vehicle collisions caused by the new driving conditions.

When Coloradans set their clocks back an hour, they will see dusk earlier in their commute and see more wild animals migrating during rush hour traffic.

CPW said motorists should drive slower and with more caution during the transition.

“We all want to move around safely, humans and wildlife alike,” said Devin Duval, district wildlife manager. “With colder weather, big game species are moving to lower ground, which is where most of the state’s roads and communities are found.”

Autumn is peak season for mating and migration in many species and recent snowstorms have pushed even more wildlife from high country into lower elevations, CPW said.

To decrease wildlife-vehicle collisions, CPW partnered with the Colorado Department of Transportation to construct migration structures that let wildlife cross highways, like the 2016 Colorado Highway 9 Wildlife Crossing Project.

However, drivers still must do their part to prevent these collisions.

Around 4,000 wildlife-vehicle collisions are reported every year in Colorado, according to CDOT.

“Big game like deer, elk and moose are making their way to the terrain where they can more easily find food and water,” said Jeff Peterson, CDOT wildlife program manager. “The seasonal movements of these animals can cause increased wildlife-vehicle collisions if drivers are unaware more wildlife is on or near the roadways.”

CPW and CDOT ask drivers to slow down, stay alert, obey traffic signs, wear seat belts and watch for movement along roadsides.