Timing of the Molt
Canaries molt once each year, usually in late summer or early fall. The process seems partially controlled by an “internal clock”, and usually occurs at the proper time, but external factors do have an influence. Molting out-of-season can negatively affect a bird’s health.
If your Canary is molting in winter or spring, try limiting its day to 8-10 hours of light, and keep the temperature at 68-70F. Full spectrum light (please see article below) is also helpful in establishing normal cycles and supports immune system functioning.<!–more–>
Stressful situations can cause partial or complete out-of-season molts. Fear (noise, another pet, moving), overly-warm temperatures, and too much light during the fall and winter are common causes of stress-induced molting.
Your Canary should complete its molt in 6-12 weeks. During that time, the feathers will appear loose and disheveled (please see photo) and it may become listless and less active than usual; males often cease singing. This is a normal response to the physical drain of growing so many new feathers; molting birds are also less capable of escaping predators, and so instinctively maintain a low profile.
Diet and Care
Despite being less active, your Canary’s need for protein and fat will soar during the molting season (feathers are 88-85% protein). Egg Food, oil-rich seeds such as niger, flax and hemp and small live or canned crickets and mealworms are important additions to the diet throughout the molting period.
A bath should always be available and will get frequent use during molting; specially formulated feather-sprays are useful in dry homes or for Canaries that appear to be slow in finishing their molts.
Feather-related ailments can mimic bad molts and need to be addressed by a veterinarian. Please see this article for info on French Molt.
Domestic Canary image referenced from wikipedia and originally posted by L.E. MacDonald