Of course, we don't know if the park will even be open in March right now because of budget cuts, but they are most visible in winter against the white snow. All the wildlife is down in the valleys where roads make observation possible. The wolves are most interested in the elk, and they are in herds in the winter and early spring. And, from about May through June 15, when the wolves are localized to have pups is a good time to come. This past May, the Soda Butte Pack made 22 kills in 28 days during that period.
Wildlife is still down in the valleys then.
The Lamar right across from the ranger station was the best in 1995. Some visitors saw them in the Soda Butte Valley in 1996. Later on, they are out at 5 a.m. Visit with the other watchers along the road to find out what they're seeing. Most of all be quiet and respectful.