On a sunny June morning, in a bog outside Beluga, Alaska, I met a Hudsonian godwit. She had inky eyes and a long, slightly upturned beak that was pinkish-orange at its base and brownish-black at its tip. The feathers on her back were of mottled sepia tones, and those on her belly were rusty brown and painterly white. Her legs reminded me of the slender inserts of spring-loaded ballpoint pens, ...