Valiya Chirakula Pakshikal (English: Birds with Large Wings) is a 2015 Indian Malayalam drama film written and directed by Dr. Biju and produced by Dr. A.K. Pillai. It is based on an incident in a small village in Kasaragod in the state of Kerala where thousands of people were infected with fatal diseases due to the effects of endosulfan, a pesticide used to protect cashewnut trees.[citation needed]