During Chapter 2 you'll take fenced path and see a bunch of crows that will change into chickens inside of a chicken coop. Open the gate to go inside, and then walk behind a chicken to lead it out of the fenced area. Keep walking behind it to make it go straight out the area and down the hill towards the water where you'll find a bridge. Make the chicken go across the bridge to get the achievement.
This achievement can be seen in the 100% full game guide at 13:51