Flight of the Butterflies
- Episode aired Sep 10, 2017
Dr. Fred Urquahart's 40-year quest to discover the secrets of monarch butterflies; the butterflies' migration from the forests of Mexico to the mountains of Canada.Dr. Fred Urquahart's 40-year quest to discover the secrets of monarch butterflies; the butterflies' migration from the forests of Mexico to the mountains of Canada.Dr. Fred Urquahart's 40-year quest to discover the secrets of monarch butterflies; the butterflies' migration from the forests of Mexico to the mountains of Canada.