BICYCLING --  Here’s another sign of springtime in Yellowstone National Park: Portions of the park have opened to bicycling.

The park has closed to snowmobiles for the winter but has yet to open to motorized vehicles for the summer.

In the meantime, bicyclists can travel between West Yellowstone, Madison, Norris and Mammoth Hot Springs, although not to Old Faithful or Canyon.

Park officials say bicyclists should be well prepared for weather that can quickly change to severe snow, ice and cold. Potentially dangerous animals including bison and grizzly bears are out and about and no services are available.

Yellowstone officials say anybody bicycling in Yellowstone this time of year should be ready to endure winter conditions for an extended period and be able to rescue themselves if necessary.