Somewhere in Africa, more than a million years ago, a line of apes began to rear their young differently than their Great Ape ancestors. From this new form of care came new ways of engaging and understanding each other. How such singular human capacities evolved, and how they have kept us alive for thousands of generations, is the mystery revealed in this bold and wide-ranging new vision of human emotional evolution.

Mothers and Others finds the key in the primatologically unique length of human childhood. If the young were to survive in a world of scarce food, they needed to be cared for, not only by their mothers but also by siblings, aunts, fathers, friends—and, with any luck, grandmothers. Out of this complicated and contingent form of childrearing, Sarah Hrdy argues, came the human capacity for understanding others. Mothers and others teach us who will care, and who will not.

From its opening vision of “apes on a plane”; to descriptions of baby care among marmosets, chimpanzees, wolves, and lions; to explanations about why men in hunter-gatherer societies hunt together, Mothers and Others is compellingly readable. But it is also an intricately knit argument that ever since the Pleistocene, it has taken a village to raise children—and how that gave our ancient ancestors the first push on the path toward becoming emotionally modern human beings.

Why are the eggs of the marsh wren deep brown, the winter wren's nearly white, and the gray catbird's a brilliant blue? And what in the DNA of a penduline tit makes the male weave a domed nest of fibers and the female line it with feathers, while the bird-of-paradise male builds no nest at all, and his bower-bird counterpart constructs an elaborate dwelling?

These are typical questions that Bernd Heinrich pursues in the engaging style we've come to expect from him—supplemented here with his own stunning photographs and original watercolors. One of the world's great naturalists and nature writers, Heinrich shows us how the sensual beauty of birds can open our eyes to a hidden evolutionary process. Nesting, as Heinrich explores it here, encompasses what fascinates us most about birds—from their delightful songs and spectacular displays to their varied eggs and colorful plumage; from their sex roles and mating rituals to nest parasitism, infanticide, and predation.

What moves birds to mate and parent their young in so many different ways is what interests Heinrich—and his insights into the nesting behavior of birds has more than a little to say about our own.

What parent hasn’t wondered “What do I do now?” as a baby cries or a teenager glares? Making babies may come naturally, but knowing how to raise them doesn’t. As primatologist-turned-psychologist Harriet J. Smith shows in this lively safari through the world of primates, parenting by primates isn’t instinctive, and that’s just as true for monkeys and apes as it is for humans.

In this natural history of primate parenting, Smith compares parenting by nonhuman and human primates. In a narrative rich with vivid anecdotes derived from interviews with primatologists, from her own experience breeding cotton-top tamarin monkeys for over thirty years, and from her clinical psychology practice, Smith describes the thousand and one ways that primate mothers, fathers, grandparents, siblings, and even babysitters care for their offspring, from infancy through young adulthood.

Smith learned the hard way that hand-raised cotton-top tamarins often mature into incompetent parents. Her observation of inadequate parenting by cotton-tops plus her clinical work with troubled human families sparked her interest in the process of how primates become “good-enough” parents. The story of how she trained her tamarins to become adequate parents lays the foundation for discussions about the crucial role of early experience on parenting in primates, and how certain types of experiences, such as anxiety and social isolation, can trigger neglectful or abusive parenting.

Smith reveals diverse strategies for parenting by primates, but she also identifies parenting behaviors crucial to the survival and development of primate youngsters that have stood the test of time.