written and directed by Erna Buffie ; produced by Merit Jensen Carr ; produced in association with the Canadian Broadcasting Corporation ; a Merit Motion Pictures production
director, Susan Fleming ; writer, Ted Remerowski ; produced in association with the Canadian Broadcasting Corporation ; in association with ARTE France ... [and others] ; produced by A Murder of Crows Inc
Terra Mater Factual Studios GmbH & Nature Conservation Channel Ltd. production in co-production with Thirteen ; written and directed by Matt Hamilton and Fergus Beeley