As in February, warm sunny days are balanced by cold snowy days. On the average there are just more sunny warm days in March than in February. Wind is often the most notable weather element during this month. A strong wind often heralds a marked change in temperature. The Main Loop Trail is the only trail on which snow is removed. Other trails remain snow and ice covered in the morning and wet and muddy later in the day. Sandhill Cranes continue to pass overhead on their way north. By the end of the month, the turkey vultures return to roost in the cottonwoods by the visitor center. In the lower elevations, the first wildflowers of the season begin to bloom. Visitation is still moderately low. Backcountry use increases as students on spring break take advantage of the over 70 miles of backcountry trails. Fee collection returns to the entrance station by mid month. Visitor Center hours are also extended in mid-month. Juniper Campground reopens by the beginning of the month.