Chicken Behaviour and Welfare: Understanding the Most Farmed Animal

Chickens are by far the most numerous farmed animal; understanding their behavioural complexity is essential for designing systems that meet their welfare needs.

Key Facts

Approximately 33 billion chickens are alive at any one time globally, making them the most numerous bird and one of the most numerous vertebrate species on the planet
Chickens have demonstrated self-control, counting ability, basic arithmetic, and the ability to deceive conspecifics — cognitive capacities exceeding those of young children in some tests
Hens show evidence of empathy — their heart rate increases and they display distress behaviour when their chicks are in discomfort, suggesting emotional contagion
Dustbathing is a highly motivated behaviour in chickens that they will work to perform even in systems that provide substrate; its frustration causes welfare harm
Chickens have been shown to anticipate future events and show optimistic or pessimistic cognitive biases depending on their welfare conditions

Welfare Considerations

Understanding chicken behavioural complexity is a welfare imperative because public perception still significantly underestimates the sophistication of these birds. The assumption that chickens are simple, unthinking creatures makes it psychologically easier to accept their use in conditions that would seem clearly unacceptable for more cognitively prominent species. The evidence of chicken cognition, empathy, and emotional life supports the welfare case for substantially improved conditions as a moral rather than merely economic argument.

What You Can Do

Share chicken cognition and behaviour research with others to build empathy for the species most affected by intensive farming
Choose higher-welfare chicken products from producers who provide enrichment and space for natural behaviour
Reduce chicken consumption from conventional intensive sources as the most direct welfare response
Support welfare research specifically focused on chicken behavioural needs and positive welfare indicators
Advocate for welfare standards that address chicken behavioural needs including dustbathing, perching, and foraging as requirements