What was the point of this chapter, or anything about the bird? I don't see why "Kat created the bird, and therefore we have to justify how it was there in the past" progressed the story at all. It's one of those things that doesn't at all feel like it was planned for and built up, it was added in as a plot point later and this is "fixing" a plot hole that that development causes, but I don't see what value the development added in the first place. I was expecting the Norns to be able to shed some light on the timelines that these two Annies came from and where the original Annie went, but somehow that's not time-related and so they can't.