How often do pet birds moult?

Most pet birds moult once or twice a year, often triggered by changing day length in spring and autumn. Canaries typically moult once a year over six to twelve weeks. Indoor lighting can make the pattern irregular.

What are pin feathers?

Pin feathers are new feathers emerging in a waxy keratin sheath. They give the head a spiky look and contain a blood supply while growing, so they are tender — handle moulting birds gently.

Is it normal for my bird to have bald patches when moulting?

No. A normal moult is gradual and symmetrical, so the bird can still fly and keep warm. Bald patches mean something else — plucking, mites or disease — and need an avian vet.

Why has my canary stopped singing?

Canaries usually stop singing during the annual moult and resume afterwards. A bird that stops singing outside the moult, or seems otherwise unwell, should be checked by a vet.

How can I help my bird through a moult?

Offer extra protein (egg food or sprouted seed), a mineral block, bathing opportunities, warmth without draughts, and up to 12 hours of dark, quiet rest each night.

Bird Health

Bird Moulting in the UK: Normal vs Not

Published 18 July 2026Last updated 18 July 20263 min read

Quick answer

Moulting is the gradual, symmetrical replacement of feathers, usually once or twice a year. New pin feathers emerge in a waxy sheath — normal and temporary. A moulting bird should never have bald patches: bare skin, broken blood feathers or year-round feather loss needs a UK avian vet.

Key takeaways

Most pet birds moult once or twice a year, often triggered by changing day length in spring and autumn. Canaries typically moult once a year over six to twelve weeks. Indoor lighting can make the pattern irregular.
Pin feathers are new feathers emerging in a waxy keratin sheath. They give the head a spiky look and contain a blood supply while growing, so they are tender — handle moulting birds gently.
No. A normal moult is gradual and symmetrical, so the bird can still fly and keep warm. Bald patches mean something else — plucking, mites or disease — and need an avian vet.

What happens during a moult

Old feathers loosen and drop while replacements grow in as pin feathers — sharp white stubs that make the head look spiky. Each pin contains a blood supply, which is why a broken pin feather can bleed heavily. According to UK bird-keeping guidance, the process is gradual so the bird can keep flying and stay warm throughout.

How often birds moult

Bird	Typical pattern
Budgies	One to two moults a year, often spring and autumn; each lasting a few weeks
Canaries	Usually once a year, often in summer, taking six to twelve weeks
Cockatiels and parrots	A main annual moult, sometimes with a lighter second moult
Indoor birds	Patterns can blur — artificial lighting disrupts the day-length cues that trigger moult

Normal moult vs problem feather loss

Normal	See an avian vet
Feathers shed gradually and symmetrically	Bald patches of bare skin
Spiky pin feathers on head and neck	Pins with black or brown tips, or a stalled moult
A few quiet, irritable days	Fluffed, lethargic bird off its food
Canaries pause singing	Singing stops outside the moult
Slightly untidy plumage for weeks	Feather loss all year ("soft moult") or self-inflicted damage

Supporting your bird through a moult

Extra protein — growing feathers is protein-hungry work; offer egg food, sprouted seeds or a vet-recommended moulting supplement
Mineral block or cuttlebone available at all times
Bathing — a shallow dish or gentle misting softens pin sheaths and eases itching
Warmth — thinner plumage means less insulation; avoid draughts
Rest — up to 12 hours of dark, quiet sleep; a breathable cage cover helps
Gentle handling — pin feathers are tender

When feather loss is not moulting

According to UK avian guidance, abnormal feather loss has several causes:

Feather plucking — the bird damages its own feathers; see Parrot feather plucking UK
French moult — a viral condition of young budgies where flight and tail feathers drop out and do not regrow properly
PBFD — psittacine beak and feather disease, a serious contagious virus causing abnormal, dystrophic feathers
Mites and skin disease — often with scaly or flaky skin
Over-preening cage mates — bald backs of heads and necks are a giveaway

When to see a vet

Book a UK-registered avian vet for bald patches, bleeding pin feathers that recur, a moult that stalls or never ends, deformed new feathers, or any moulting bird that seems unwell. Take a few shed feathers in a clean bag — they can help the vet's assessment.

Sources & further reading

Facts in this guide are rewritten in plain English from publicly available UK advice. We name the organisation where a specific point comes from their guidance. Links below go to the original pages — use them to read the source material directly.

PETHEALTH+ is independent. These organisations do not sponsor, approve, or partner with this website. Guidance checked against sources listed below (last updated 2026-07-18).

Frequently Asked Questions

How often do pet birds moult?: Most pet birds moult once or twice a year, often triggered by changing day length in spring and autumn. Canaries typically moult once a year over six to twelve weeks. Indoor lighting can make the pattern irregular.
What are pin feathers?: Pin feathers are new feathers emerging in a waxy keratin sheath. They give the head a spiky look and contain a blood supply while growing, so they are tender — handle moulting birds gently.
Is it normal for my bird to have bald patches when moulting?: No. A normal moult is gradual and symmetrical, so the bird can still fly and keep warm. Bald patches mean something else — plucking, mites or disease — and need an avian vet.
Why has my canary stopped singing?: Canaries usually stop singing during the annual moult and resume afterwards. A bird that stops singing outside the moult, or seems otherwise unwell, should be checked by a vet.
How can I help my bird through a moult?: Offer extra protein (egg food or sprouted seed), a mineral block, bathing opportunities, warmth without draughts, and up to 12 hours of dark, quiet rest each night.