The AvP : Predators module adds a few chat messages to alarm the player to hunts, tribes, clans and other actions performed across the world by the Yautja. They serve to give players an active warning of what is to come, or has occurred.

“The hunters moon shines a foreboding presence..”

A player has been marked for a hunt. Only ever sent to the target player.

“You cannot rest. Something is watching you.”

Players the target of a Yautja (during a hunt) cannot sleep and are given this message when attempting to.