This is what we found on Wikipedia regarding the Tim Gallagher:

Tim Gallagher is an American writer and wildlife photographer and the author of six books: Parts Unknown, a Naturalist's Journey in Search of Birds and Wild Places; The Grail Bird, Hot on the Trail of the Ivory-billed Woodpecker; Falcon Fever, A Falconer in the 21st Century; Imperial Dreams, Tracking the Imperial Woodpecker Through the Wild Sierra Madre; Born to Fish, How An Obsessed Angler Became the World's Greatest Striped Bass Fisherman; and Wild Bird Photography, A Full-Color Guide. He was editor-in-chief of the Cornell Lab of Ornithology's Living Bird magazine for 26 years and before that was on the start-up editorial staff first managing editor of WildBird magazine.

In 2004, Gallagher reported sighting an ivory-billed woodpicker in the Big Woods of Arkansas; however, a subsequent expedition led by the Cornell Lab of Ornithology was unable to confirm his sighting. Gallagher's book about the experience, The Grail Bird: Hot on the Trail of the Ivory-billed Woodpecker (ISBN 0-618-45693-7), was published in May 2005.

Gallagher was born in England and received a B.A. in magazine journalism, and an M.F.A. in English, both from California State University, Long Beach.