Laying hen next to a nest box in a poultry house, with a tray of eggs

Feather Pecking and Cannibalism in Hens: Causes and What to Do Right Now

Why hens pull each other’s feathers and peck wounds, what to do on day one, and how to remove the cause so it doesn’t come back.

First one hen pulls feathers from her neighbor. A week later half the flock has bare backs, and then blood appears on someone’s wound — and the flock starts pecking in earnest. Pecking escalates fast; it has to be stopped on the first day, and the cause found right after.

What to do immediately

  1. Separate injured hens. The sight of blood and the color red trigger the others. Keep the injured bird apart until it heals.
  2. Treat wounds with an anti-peck product: these are usually dark-colored and bitter. Treating, not just disinfecting.
  3. Dim the lights or switch to red lamps: blood doesn’t show under red light.
  4. Find the ringleader. Often one or two hens do the pecking. Separate them for a few days.

Causes

CauseHow to check
Light too brightBrighter than needed to read a newspaper
CrowdingMore than 5–6 hens per m² of floor, too little feeder and drinker space
Lack of protein and methionineCheap feed, lots of grain instead of compound feed, molt
Too little saltUnsalted feed, homemade mash
BoredomNo litter to scratch in, no outdoor run
HeatHouse above 27–28 °C
ParasitesHens scratch themselves; mites or lice at the feather base

Vent pecking

The most dangerous form. In young hens starting to lay, or in overweight ones, the oviduct sometimes prolapses, and the red tissue attracts others. Separate such a hen immediately. To prevent it, don’t increase light for pullets too early (on lighting) and don’t overfeed them.

Prevention

About beak trimming

On commercial farms the beak tip is trimmed at the hatchery. It reduces the damage from pecking, but in many countries the procedure is restricted or banned, and on a small farm removing the causes matters more. Never trim an adult hen’s beak at home: it’s painful and dangerous.

Record the outbreaks

If pecking keeps coming back, its history in EggPulse inspections helps you find the link — with molt, a feed change, heat or bright light. Log deaths from pecking too, to see what the problem actually costs.