While leaving in the dark ws unnerving, the group was not afraid. This level of wilderness was little to no threat to them compared to the violent jungle. In the jungle, they had been on edge completely. Every single thing made them think twice.
The changes in their actions were clear to anyone that had known them before they had gone to the violent jungle. The group was moving with more alertness. Their entire attitudes showed that they were noticing smaller changes around them.
As the breeze would pick up, everyone would move to be prepared to handle a threat from the direction the breeze blew in. That was the place where a beast would pick up their scent. When they were hearing sounds, they would wait for a moment to see if anything else changed. The same with the distant sound of beast cries.
Creation is hard, cheer me up!