The mystical and the natural blend superbly in this first children's book by the accomplished literary novelist Louise Erdrich. The eccentric, well-traveled grandmother of two young kids decamps in mid-vacation, riding a porpoise to Greenland and leaving behind a trove of strange treasures and artifacts including a collection of bird's nests and three old eggs which hatch, marvelously, into passenger pigeons. Erdrich wields her Native American ancestry and her worldiness--Grandmother owns an original Klee--to give young readers a sense of the world's wonders and the wisdom of the elders, the old wisdom of the natural cycles that we are losing. A letter from Grandmother, promising to return, winds up this fetching tale.