Dr Dale Zimmerman is the man behind Kenya’s and Tanzania’s first definitive field guide to birds — Birds of Kenya and Northern Tanzania. PHOTO | COURTESY | MARIAN ZIMMERMAN
Six weeks, six thousand kilometres and six hundred species of birds later, 89-year-old Dr Dale Zimmerman, emeritus professor of biology at Western New Mexico University, US, walks into the foyer of a Nairobi hotel on the eve of his return flight to New Mexico in late October.
