Organic control is first recorded all around 300 AD in China, when colonies of weaver ants, Oecophylla smaragdina, have been deliberately placed in citrus plantations to control beetles and caterpillars.[5] Also in China, ducks have been used in paddy fields to consume pests, as illustrated in historical cave art. In https://www.bing.com/maps?osid=22b82889-712b-4cf4-8c92-0cbcc237352d&cp=47.630808~-122.143389&lvl=16&imgid=8b793b0d-8499-45b2-baa1-849154a35295&v=2&sV=2&form=S00027