See COVE Master Map entry: https://editions.covecollective.org/place/norwich

In London Labour and the London Poor edition: 

Phase 1

Of the Street Sellers of Live Birds. (Volume 2): "The breeding of canaries in this country for the London supply has greatly increased. They are bred in Leicesterand Norwich, weavers being generally fond of birds."

Phase 2 

Experience of a Running Patterer. (Volume 1)