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Glossary · Industry

Enriched cage

Information available in English.

Definition

What 'Enriched cage' means

Detailed explanation in primary glossary.

All glossary terms

In depth

The longer answer

An enriched cage, often referred to as a furnished cage, is a standardized housing system used in industrial egg production to confine laying hens. Developed as a response to animal welfare concerns regarding traditional battery cages, these systems are common in the European Union and parts of North America. While they still restrict the birds to a wire enclosure, they are designed to provide slightly more space and specific features intended to facilitate natural behaviors that are impossible in barren environments.

In practice, these units typically house between 20 and 60 birds, providing each hen with approximately 750 square centimeters of floor space. Unlike older models, enriched cages must include a nesting area for egg-laying, a perch for roosting, and a scratch pad with litter to allow for foraging and dust-bathing. The wire flooring is sloped to allow eggs to roll onto a conveyor belt, while automated systems deliver feed and water, maintaining high-density production within a controlled indoor climate.

For the consumer, the presence of enriched cages represents a middle ground between intensive confinement and cage-free systems. While they offer significant improvements in bone strength and behavioral expression compared to battery cages, the birds remain confined indoors with limited flight paths and social complexity. When shopping, eggs from these systems are often labeled as 'caged' or 'furnished,' and understanding this distinction helps in navigating the trade-offs between animal welfare standards, environmental footprints, and retail pricing.

At a glance

Quick facts

Quick facts — Enriched cage
DetailWhat to know
Minimum Space750 square centimeters per hen
Key FeaturesNests, perches, and scratching mats
Regulatory StatusStandard requirement in the European Union
Common SynonymFurnished or colony cage systems

In practice

What this means for you

  • Check egg cartons for the term 'furnished' to distinguish these from more restrictive battery cage systems in certain regions.
  • Recognize that 'enriched' does not mean cage-free; birds still live their entire lives within a metal wire enclosure.
  • Look for third-party welfare certifications if you want to ensure birds have access to outdoor ranges or larger indoor spaces.
  • Understand that these systems are designed to balance hygiene and efficiency with basic behavioral needs like perching and nesting.

FAQ

Common questions

Is an enriched cage the same as cage-free?
No, enriched cages are not cage-free systems. In a cage-free environment, hens can walk, spread their wings, and fly within a barn or aviary. In an enriched cage, the birds are still confined behind wire bars, though they have access to specific amenities like a small nesting area and a perch that battery cages lack.
Do hens prefer enriched cages over battery cages?
Research into animal behavior suggests that hens show a strong preference for the features found in enriched cages, particularly nesting boxes. The ability to perform these instinctive behaviors reduces stress and frustration. However, the limited space still prevents the full range of movement and social interaction found in more expansive housing systems.
How can I tell if my eggs come from enriched cages?
Labeling varies by country, but in the EU, eggs from these systems are marked with the code '1' or '3' depending on specific local regulations. In the US, unless a carton specifically says 'Cage-Free,' 'Free-Range,' or 'Pasture-Raised,' the eggs likely come from either a battery cage or an enriched cage system.