Description In this middle-grade novel told in letters, when Sara Salt's little brother is born early, her mom and stepdad send her to stay in Toronto with her half-sister Abby, who is starting a transitional housing park for unhoused people.Sara isn't great with strangers: she has selective mutism, so being in a new place isn't always easy...Sara's little brother is born premature. He looks small and red, like a baby bird, so she calls him Birdy. Because she can't visit him often, she writes him letters about everything that's happened since he's been born?like how her mom and stepdad are sending her to Toronto to stay with her half-sister, Abby. And how Abby lives in this amazing storage container house on a vacant lot and hopes to build a whole community of them for unhoused people. Sara discovers she too has ways of getting things done?like passing the librarian a note asking for books instead of saying it out loud, or talking to the dogs at the homeless encampment as a way of meeting their people. When she sees that the mayor and the police are making things harder for the unhoused community, Sara realizes she can be an advocate?through her letters?and that there's more than one way to stand up for what you believe in and make your voice heard.