This was my first Yellowstone trip at 2021 and it was a good one too. Early on the day it wasn't a great photo trip yet because it was too crowded and light was harsh. But end of the day we spotted the herd from a distance and found out almost hundreds of Bisons were crossing the river. I took hundreds of photos but this family of three was the best angle and light amongst them. I couldn't change my angle a lot or get closer because of the safety and wildlife respect reasons.

Canon 5D m3
Sigma 150-600 C