Complex sentence: Sherwin chaired the ethics committee of the International Society for Applied Ethology Council, and was the lead author of their ethical guidelines, and in 2006 was the lead organizer of the 40th International Congress of the ISAE at Bristol.
Split into simpler sentences: Sherwin chaired the ethics committee of the International Society for Applied Ethology Council, and was the lead author of their ethical guidelines. In 2006 he was the lead organizer of the 40th International Congress of the ISAE at Bristol.