This manual identifies areas of risk common to most poultry enterprises and appropriate measures to minimise these risks. When undertaking the risk assessment underpinning the farm-specific biosecurity measures, it is important to take into account all factors that may impact on the biosecurity of the production area. These factors should include the species of bird being produced, location and layout of property and production area, source of water supply, disease status of the district, proximity to other production areas with avian species, presence and type of wildlife, and interface with the organisations and/or individual clients that are being supplied. These.