In the years since Chris Chester and his wife Rebecca rescued a featherless baby bird--a creature with all the initial appeal of "a testicle with a beak" --they've had plenty of time to consider and reconsider their eccentric lifestyle. The upstairs floor of their home in Portland has become an indoor aviary. There is B's room, which he shares with a varying number of finches; the canary room; and the room housing the three subsequent foundling...