Book excerpt: Hornbills are among the world’s most distinct birds. Easily recognized by their oversized beaks adorned with large casques, they range from Africa to India and throughout Asia. One of the oldest bird orders, they have been known to mankind for millennia and loom large in the mythology of indigenous cultures of tropical Asia. In the past thirty years, ecologists have uncovered many fascinating aspects of hornbill biology, from their unique nest-sealing behavior to their roles as farmers of the forest. Building on fourteen years of research, Margaret F. Kinnaird and Timothy G. O’Brien offer in Ecology and Conservation of Asian Hornbills the most up-to-date information on the evolution, reproduction, feeding ecology, and movement patterns of thirty-one species of Asian hornbills. The authors address questions of ecological functionality, ecosystem services, and keystone relationships, as well as the disturbing influence of forest loss and fragmentation on hornbills. Complemented by superb full-color images by renowned photographer Tim Laman that provide rare glimpses of hornbills in their native habitat and black-and-white illustrations by Jonathan Kingdon that highlight the intriguing aspects of hornbill behavior, Ecology and Conservation of Asian Hornbills will stand tall in the pantheon of natural history studies for years to come.