A robotic shed is where robots put the cups on the cows instead of the farmer!
The cows go into the robotic stalls when they want to be milked and the robot does the rest!
It washes the teats first, puts the cups on, milks the cow and then lets her out once she is finished.
There are not a lot of these in New Zealand as they are quite expensive, but in Europe they are becoming quite common as robots are more suited to their farming systems.
I've even got a movie all about robotic milking: