Deep, crusty snow piled up on fields in eastern Colorado after last week’s snowstorm is driving herds of pronghorn onto roads, and dozens of them are dying, state wildlife officials said. Pronghorn are being hit by drivers in droves as they seek refuge from snow-covered fields,

While the reason for the creatures’ deaths may seem obvious, the reasons behind it are less apparent than you might think.

Colorado Parks and Wildlife is asking drivers to watch out after over 100 pronghorns were found dead on roads across eastern Colorado. CPW said pronghorns often get stuck on roads during snowstorms, as they tend to go under fences rather than over,

The pronghorns were killed by vehicles, likely large trucks, as they sought shelter from snow in fields on rural roads and highways in Colorado.

More than 100 pronghorn have died on Eastern Colorado roadways as winter descends upon the region, according to state wildlife officials. Warning: This video contains graphic content. Viewer discretion is advised.

That included 53 being killed on Nov. 12 along U.S. Highway 36 east of Byers, according to Colorado Parks and Wildlife.

A significant number of pronghorns have died on eastern Colorado roadways as winter descends upon the region, according to state wildlife officials.