In addition, from 1988 to 1993 he served on the team of illustrators for volumes 5 to 7 of the standard work Handbook of the Birds of Europe, the Middle East and North Africa by Stanley Cramp.
Von 1988 bis 1993 gehörte er zum Illustratorenteam der Bände fünf bis sieben des Standardwerks Handbook of the Birds of Europe, the Middle East and North Africa von Stanley Cramp.