[[Christopher O. Bird]] was an American author and alleged [[Central Intelligence Agency|CIA]] operative. He is known for co-authoring the 1973 bestselling book, *[[The Secret Life of Plants]]*, which popularized the controversial experiments of [[Cleve Backster]] on plant sentience.[^1] --- [^1]: Jacobsen, Annie. *Phenomena: The Secret History of the U.S. Government's Investigations into Extrasensory Perception and Psychokinesis*. Little, Brown and Company, 2017.