Chicken pain assessment has advanced significantly with the development of validated behavioral and facial scoring tools. Using these tools improves welfare response in poultry production.
Pain assessment in chickens has been revolutionized by the development of validated behavioral and facial scoring tools that make welfare assessment practical in commercial settings. The Chicken Grimace Scale — adapted from similar tools in mammals — identifies pain-associated facial changes including orbital tightening and comb position that correlate with known painful conditions. Gait scoring provides a simpler pen-side tool that trained observers can apply rapidly across a flock. These tools transform pain from a subjective, unknowable state into something measurable and actionable. The challenge is implementing them in commercial contexts where time pressure and flock size make individual animal assessment difficult, driving interest in automated scoring technology.