The quarantine was set up after avian influenza H5N2 was confirmed on a broiler breeder chicken farm and a turkey farm located close to each other.
They were the second and third outbreaks in Oxford County. The first was on a four-barn turkey farm.
The unseasonably warm weather last week has probably eliminated most of the virus being carried by migrating ducks and geese and dropped in their feces.
The poultry industry remains on near-paranoia biosecurity protocols to prevent the virus from infecting more flocks.