Elk calving season has begun in Yellowstone National Park, and park officials are advising visitors to beware of their surroundings.

Here is some important information if you are planning a trip to Yellowstone during elk calving season.

  • Cow elk are much more aggressive towards people during the calving season and may charge or kick.
  • Stay alert. Look around corners before exiting buildings or walking around blind spots: cow elk may bed their calves near buildings and cars.
  • Keep at least 25 yards from elk at all times.
  • If an elk charges you, find shelter in your vehicle or behind a tall, sturdy barrier as quickly as possible.

Yellowstone National Park began Phase one of reopening on Monday, May 18. Wyoming entrances are now open. An official opening date for entrances in Montana and Idaho has not been announced.