Nesting Behavior and Welfare in Laying Hens

The motivation to find a nest before laying an egg is one of the strongest behavioral drives in laying hens, with profound welfare implications for housing systems.

Key Facts

Hens in cages without nests show intense distress behavior before egg-laying
The motivation to nest is so strong that hens will work to access nest boxes even in pain
Nest boxes in cage-free systems must be appropriately designed to be used effectively
Competition for preferred nest sites causes aggression in poorly managed flocks
Individual nest preferences are well-documented in laying hens

Welfare Considerations

The nesting drive in laying hens is a welfare-critical behavior — hens denied nest access before laying experience intense frustration that has been described as among the most significant welfare harms in commercial egg production. Cage-free and free-range systems provide nest boxes but welfare outcomes depend heavily on box design, placement, and management. Inadequate nest provision or poor management leads to floor-laying, nest-sharing stress, and unmet behavioral needs even in theoretically higher-welfare systems.

What You Can Do

Choose eggs from systems with demonstrated nest-box welfare standards
Support cage-free transitions that include proper nest box design requirements
Advocate for welfare standards that include nesting behavior as a key indicator
Support research into optimal nest box design for commercial laying systems