From 1992 to 1994, he provided the line drawings to the volumes six to eight of the Handbook of the Birds of Europe, the Middle East and North Africa by Stanley Cramp (1913-1987) and Christopher M. Perrins, which were published in The Birds of the Western Palearctic (BWP) series.
Von 1992 bis 1994 lieferte er die Lineart für die Bände sechs bis acht des Handbook of the Birds of Europe, the Middle East and North Africa von Stanley Cramp (1913–1987) und Christopher M. Perrins aus der Reihe The Birds of the Western Palearctic (BWP).