5. Chickens are surprisingly good at math.
Three-day-old chicks are able to perform basic arithmetic and discriminate quantities, always opting to explore a set of balls with the greater number, even when an object was visibly transferred from one set to another. Five-day-old chicks have been found to track up to five objects.
“When they were presented with two sets of objects of different quantities disappearing behind two screens, they were able to successfully track which screen hid the larger number by apparently performing simple addition and subtraction.”
6. Chickens can exercise self-control.
In an experimental setting, chickens have been given the choice between 2-second delay with 6 seconds of access to food, versus a 6-second delay with 22-seconds of access to food. The hens waited for the longer reward, “demonstrating rational discrimination between different future outcomes while employing self-control to optimize those outcomes.” Self-control usually doesn't appear in humans until four years of age.
These are just a few of the remarkable discoveries described in Marino’s study, a highly readable, entertaining paper. It's an important reminder that chickens, arguably the most ubiquitous animals in our world, deserve far more respect than they currently receive. Hopefully this will lead to more people questioning the horrific conditions in which most of them are kept.
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