As Easter weekend approaches and the kids are making elevated artwork out of what--at any other time of year--is simply breakfast, you might want to take a moment to ponder one of nature's most ephemeral marvels: birds' eggs. In "Small Miracles" (Audubon Magazine, March-April 2008), writer Kenn Kaufman and photographer Sharon Beals exlore the beauty and natural history of these delicate yet timeless vessels, the ultimate combination of form and function.