Flight of the Heron read-along: Part III chapters 3-4

Keith is back! :D And so is Ewen, and so we get to the really good bit.

Next week we'll only read the one chapter—partly because chapter 5 is the last in Book III and I think sticking to the Book boundaries makes things neater, partly because it's a fairly pivotal chapter and I want us to have time to appreciate it properly...