Access to nest boxes before laying is one of the strongest behavioral motivations in laying hens, and inadequate nest provision causes significant frustration and welfare harm.
Nest box access is a fundamental welfare requirement for laying hens that is directly actionable by producers through provision of adequate numbers and appropriate design. The strength of nest-seeking motivation means that prevention of access causes acute behavioral frustration with measurable physiological consequences. Current welfare standards specify minimum nest box ratios but do not always address the quality of nest box design, which affects whether hens voluntarily use them. High-quality nest boxes with appropriate darkness, substrate, and physical enclosure reduce floor laying and competition, improving welfare for all hens in the flock. This is a welfare improvement that also has clear management and hygiene benefits, creating strong alignment between welfare and production interests.