Outdoor Chicken Runs: Welfare, Parasites, and Biosecurity Tradeoffs
Plain-English Summary
Outdoor access can give birds more space and opportunities for natural behavior, but it also changes exposure to weather, parasites, wild birds, rodents, predators, and contaminated ground. “Outdoor” is not automatically better or worse; design and management determine much of the tradeoff.
Study Type
Updated review article of outdoor-access versus conventional broiler production. It is informative for backyard housing but does not directly test backyard flocks.
Key Findings
The review describes welfare, food-safety, meat-quality, and health tradeoffs of outdoor access. Outdoor systems may increase behavioral opportunity, but they can also increase endo- and ectoparasite exposure and make biosecurity more difficult.
Practical Takeaways
Build a run around risk control: provide shelter from rain and sun, maintain dry footing and drainage, rotate or rest heavily used ground when feasible, secure feed and water, and limit wild-bird access. A covered run and a clean, well-ventilated coop can support outdoor time without treating the yard as risk-free.
Limitations
The reviewed literature concerns commercial broilers, not small mixed-age backyard flocks or layers. It cannot tell an owner the precise square footage, substrate, or fencing system required for an individual property.
Full Citation
Updated review of animal welfare, food safety, and meat quality in outdoor-access broiler production. Read the PubMed record.