orologio en CB01 OFFICIAL. This film documents the yearly cycle of the great blue heron, its migration from Central America and the West Indies to the St. Lawrence River in Québec, and the breeding and rearing of its young. Outstanding footage shot by the filmmaker perched high in a tree affords close-ups of the birds' intricate courtship rituals. A sensitive, beautifully photographed nature film with much to tell us of ecology and wildlife.