Canaries have been selectively bred for centuries for song and appearance, but some modern exhibition breeds have been selected for traits that cause welfare problems including respiratory difficulties.
Canary breeding for extreme traits mirrors welfare concerns in dog breeds. Vision-impairing fringes in Gloster canaries prevent normal navigation and foraging behaviour. Excessive feathering in frilled varieties can restrict movement and harbour parasites. Feather cysts cause chronic pain. These welfare costs of exhibition breeding are often hidden from buyers. Canaries bred for health rather than appearance, housed in large, enriched environments with species-appropriate social contact, have fundamentally better welfare outcomes. Supporting welfare-focused canary keeping over exhibition breeding is an important consumer choice.