"Mayr became a mentor for many promising young men with an interest in birds. He urged them to pick a bird, to follow and study it, to learn the secrets of its breeding life, its winter habits, to take in small details that no one else knew because no one else had ever watched so closely. Mayr argued against a stream of ornithologists who hoped to make the science entirely academic, feeling that serious amateurs could make valuable contributions to the field of ornithology if they watched birds seriously and well."