Hans Winkler (Konrad Lorenz Institute for Ethology, Vienna, Austria), life-long global woodpecker
researcher and lead author of "Woodpeckers: a Guide to the Woodpeckers, Piculets and Wrynecks of
the World" (1995) and "Family Picidae (Woodpeckers)" in Handbook of the Birds of the World,
Volume 7 (2002). In this photo Hans is listening to the drumming of a Lineated Woodpecker
(Dryocopus lineatus)

Campos do Jordão, Brazil