A brown hen photographed closely in a grassy setting; illustrative, not diagnostic

Health & biosecurity · 04

Notice change early. Diagnose nothing alone.

Chickens often mask illness. Your role is to know the baseline, recognise change, reduce immediate risk and involve the right professional - not to force a symptom into an internet diagnosis.

This page is not veterinary advice.

Do not delay veterinary care while trying home treatments. Medicines, wormers and treatments must be appropriate for the condition, bird and egg/meat status.

Observe before handling

A healthy bird is generally bright, alert, eating, drinking and interacting normally. Early illness can show as behaviour change, altered intake, dull or soiled feathers, eye or nasal discharge, abnormal droppings, lameness or reduced activity.[1]

PostureHunched, tail-down, wing droop, repeated straining?
BreathingOpen-mouth breathing, noise, discharge, tail bobbing?
MovementEven steps, normal balance, normal willingness to perch?
IntakeEating and drinking at the individual’s usual level?
OutputDroppings and egg pattern normal for this bird?
SocialMixing normally or isolated and being targeted?

Signs that need urgent professional help

Breathing difficulty

Marked effort, gasping, blue/purple colour or collapse.

Neurological change

Seizures, head tilt, paralysis, severe incoordination or inability to stand.

Major trauma

Uncontrolled bleeding, open fracture, predator injury or exposed tissue.

Rapid flock change

Multiple sick birds, sudden deaths or a sharp unexplained fall in feed, water or eggs.

Reproductive emergency

Repeated straining, prolapse, severe abdominal swelling or penguin-like stance.

Unable to eat or drink

Especially with depression, weight loss, crop abnormality or dehydration.

These categories do not identify the cause. Isolate safely where appropriate, minimise stress, keep the bird warm but not overheated, and contact a poultry-friendly vet.

Biosecurity is everyday design

  • Separate

    Quarantine new or returning birds away from the resident flock, with dedicated equipment.

  • Order

    Care for healthy resident birds before isolated or sick birds.

  • Clean

    Remove organic material before disinfecting; use products correctly and protect birds from residues.

  • Exclude

    Keep feed and water away from wild birds and control rodents.

  • Record

    Track visitors, bird movements, illness, mortality and unusual egg changes.

Notifiable disease

Suspected bird flu must be reported

Bird flu is notifiable. If you suspect it, report immediately - even if signs are mild. In England call APHA on 03000 200 301; Wales uses 03003 038 268; Scotland uses the local Field Services Office.[2]

Check current GOV.UK signs and reporting instructions →

Bird-flu zones and mandatory measures change. Check the current official situation rather than relying on an old article or saved social-media post.[3]

Prepare a help list now

  • Private vetFind a practice willing to see poultry before an emergency.
  • Hen supportBritish Hen Welfare Trust health resources and Hen-Friendly Vets list.
  • Official diseaseAPHA reporting route for suspected notifiable disease.

Sources

  1. MSD Veterinary Manual: Early signs of illness in backyard poultry
  2. GOV.UK: Spot and report bird flu
  3. GOV.UK: Prevent bird flu and stop it spreading
  4. British Hen Welfare Trust: Hen health and Hen-Friendly Vets