Perches and Nest Boxes for Laying Hens: Why Vertical Space Matters

Laying hens have strong drives to perch and lay eggs in enclosed spaces. Provision of perches and nest boxes is a welfare requirement that significantly improves hen quality of life.

Key Facts

Perching is a natural behaviour for domestic chickens, which roost at height to avoid ground-level predators overnight
Hens denied perches show increased fear responses and impaired sleep quality compared to perch-reared birds
Bone strength in laying hens is significantly improved by perch access, which encourages wing-flapping and exercise
Nest box use is a highly motivated behaviour; hens denied nesting access show distress vocalisation and increased frustration
EU enriched cage standards mandate perches and nest boxes as minimum requirements for caged systems
In enriched cages, perch space is often insufficient for all hens to use simultaneously, reducing welfare benefit
Free-range and barn systems with adequate perch provision show lower bone fracture rates than caged systems
The duration and height of perch use varies significantly between individual hens, indicating genuine preference

Welfare Considerations

Perches and nest boxes are not welfare extras but fundamental requirements for laying hen wellbeing. The motivation to perch is so strong that hens will work persistently to access elevated resting places; denying this behaviour causes frustration and compromised sleep. The motivation to lay in an enclosed nest is equally strong; hens denied nest access show pre-laying restlessness and distress that in severe cases lasts hours. Despite these well-established welfare needs, enriched cage provision is often minimal and inadequate: perches that are too narrow, too low, or too few to allow all birds to use them simultaneously fail to provide genuine benefit. Welfare-conscious consumers choosing eggs from higher-welfare systems should understand that the quality of perch and nest provision varies significantly even within system types, and that certification standards differ in their specificity on these points.

What You Can Do

Choose eggs from systems with verified, adequate perch and nest box provision per hen
Support certification standards that specify perch height, width, and space allocation per bird
Advocate for a transition away from all caged systems toward barn or free-range production with good perch access
Learn about laying hen behaviour and why perching and nesting are welfare necessities
Reduce egg consumption from caged systems to drive market transition to higher-welfare alternatives
Ask retailers what perch and nest box standards they require of their egg suppliers
Support research into optimal perch design for bone health and welfare in commercial laying hen flocks