Link freezes when he hears the whistle and turns his eyes towards a close by tree.

Someone is sitting near the base, the one called the Soldier.

He looks over his shoulder back towards the woods and weighs his options of running off or responding to the whistle.

He decides on the latter and slowly approaches the Soldier, the lantern still held in his mouth. When he's a few paces away he stops and sits in the snow with his ears perked forward.