The Bengal tiger is the preeminent apex predator in India’s forests. Because all other animals are its prey, they’ve formed a loose communication network to signal when a tiger is on the move. Langur monkeys are the principal lookouts and usually the first and loudest to alarm, followed by spotted deer, sambar, and birds. Their alarm calls build to an explosive cacophony of howling, barking, bleating, whooping, and shrieking that follows the tiger.

Karen Hunt
India, 2015