When award-winning writer and biologist Bernd Heinrich became the unwitting -- but doting -- foster parent of an adorable gosling named Peep, he was drawn into her world. And so, with a scientist's training and a nature lover's boundless enthusiasm, he set out to understand the travails and triumphs of the Canada geese living in the beaver bog adjacent to his home. In The Geese of Beaver Bog, Hein...