In Helpers at Birds' Nests, renowned naturalist and ornithologist Alexander Skutch provides vivid, detailed accounts of a remarkable aspect of bird behavior—he aid that one bird gives another who is neither its mate nor its dependent young and who may even belong to a different species.

In graceful, clear prose, Skutch makes accessible to amateur bird-watchers examples of cooperation in species as far-flung as the little rifleman of New Zealand, the Laysan albatross in the mid Pacific, and the neotropical birds of Skutch's own Valley of El General in Costa Rica.

Skutch describes the cooperative behavior of more than fifty families of birds. Each family is introduced by a brief sketch of its distribution and outstanding features, followed by intimate, nontechnical accounts of the helpful behaviors that have been most carefully studied. Skutch considers the significance of helpful birds and discusses the theoretical aspects of cooperative breeding, its evolution, kin selection, altruism, and demography.

First discovered by the author more than half a century ago, cooperative breeding has become increasingly studied by professional ornithologists. In this expanded edition, noted behaviorist Stephen Emlen credits Skutch's passionate observations of birds with promoting scientific interest in avian behavior. Emlen offers readers a summary of the advances made in the field during the past ten years and places Skutch's work in the context of contemporary ornithological research.

In this reflective account of life in the tropics, Alexander Skutch offers readers both his observations and his interpretations of what he has experienced. In the many chapters about birds and their behavior, he describes a dove that defends its nest with rare courage, castlebuilders who create elaborate nests of interlaced twigs, oropendolas that cluster long woven pouches in high treetops, and an exceptionally graceful hummingbird who fails to pay for its nectar by pollinating the flowers that yield it. Skutch also describes curious plants and their flowers, including a birthwort that holds its pollinating flies captive and fern fronds that twine high up trunks in the rain forest.

With penetrating clarity, Skutch considers the significance of all this restless activity: he examines the origins of beauty and our ability to appreciate it, the foundations of tropical splendor, the factors that help us feel close to nature or alienated from it, and the possibility of consciousness and emotion in animals. He also addresses the quandary of the biologist contemplating painful experiments on animals rather than learning by direct observation, and he asserts that our capacity to care for the world around us is the truest criterion of our evolutionary advancement.

Skutch brings a thoughtful, unequaled voice to the description of the world he has grown to know and understand, a world considered forbidding by most northerners and still largely unexplored.