Offer the feathers to the hawk in the EDZ Reservoir.
With the feathers of Light collected, it is time to return to the Hawk—an aspect of the Traveler—to see what is to come.
"We've been gathering paracausal energy from these feathers, building up an abundance of power over such a long period of time. I can't imagine what we'll do with it, but I can feel an intent behind the energy, a directive and a choice at once." —Ghost