OK, this is a rather large sample you've given, so I'm going to have to break my review down in parts. Also, an apology if my criticism seems personally harsh, if it does I'm not intending it to be.
First, there is a lot of unnecessary detail. I did that when I first wrote the first chapter of my second attempt at a first novel. I know, there's all those cool extras and reasons why everything is this way or that way (in my case, it was that everything was blue because of a clerical error), but the reader doesn't need to know it right away unless it's plot-relevant.
For example, we don't need to know about the exact types and qualities of food that the people in Erodale eat just yet on page 1 where no one is eating. The fact that there was a plague is important, and deserves its place.
Aside: It's important that every sentence has a purpose. What do you want the mood in the town to be? Rural? It seems rural enough right now as I'm reading it. But is there an undertone of discrimination? Or is it just all peaceful? Or both? It's a much better use of sentences to establish the mood than to talk about the obscurer parts of the world's lore.
Actually, I notice that you're really cramming information in. My honest opinion is that you should decide what's all that important and what isn't. You mention that Quina has a color-changed chawile feather in a parenthetical remark. Now, is this an important thing? If so, it shouldn't be parenthetical, for the reader might just run over it. Is it an unimportant thing? Then what is it doing here?
Two: You really need to vary your words. You use the words marsh or marshy about 4-5 times on page 2, and the exact phrase "marshy fields" is used twice. This is bad, because it makes reading monotonous.
I'll try to find time to read more, but that's all for now. Keep writing no matter what.
EDIT: More! Three: As far as you I have read, every instance of the word 'choice' is bold. Now, this is actually the sort of step that shows that you have a powerful vision in mind. However, bold letters will stand out and make it annoying to read. (See: the headache-causing horror of Septimus Heap.) Try using a different font or italics.
In addition, are you going to do this for the entire book? If so, it will lose its novelty fast.