When I’m involved in the Hatchery Management Training I often mention that hatching is 'looking, listening and smelling', even though sensor technology is gaining popularity. I say this to encourage young hatchery managers to sometimes get out of their hermetically sealed office and take a slow, attentive walk through the hatchery. Since a visit to a small hatchery in Asia to discuss switching from multi-stage to single-stage incubation, I know that it’s worth being on 'smell alert' even before entering the hatchery...