Cavity-Nesting Birds of North American Forests

A longtime wildlife biologist and forester, he writes from decades of hands-on experience studying how animals and forests shape one another. His work brings together field science, habitat management, and a clear love of the natural world.

Best known for co-authoring a practical U.S. government handbook on cavity-nesting birds, this wildlife biologist helped turn careful field research into guidance that forest managers could actually use. His work focused on the birds that depend on old trees and cavities, and why those habitats matter.

A nature writer and editor whose books helped introduce readers to Hawaiʻi’s distinctive wildlife and ecosystems. His work is closely tied to conservation and to the natural history of Hawaiʻi Volcanoes National Park.