I picked up this book because I heard a bit of trivia about it on a podcast. Did you know that eggs grow inside a bird the opposite way, in many species, from the way they come out? Truth! And no one is quite sure why, but they rotate right before they are laid. I learned that any many other fascinating things in this book which is written by a bird biologist, Birkhead, who just happens to also have a good sense of humor. Took a long time to read since it’s not all the time you’re looking for a good nature book about how eggshells get made, but when that is what you are looking for, no other thing will do.