The Startling Intelligence of the Common Chicken
See InsideChickens are smart, and they understand their world, which raises troubling questions about how they are treated on factory farmsIn the animal kingdom, some creatures are smarter than others. Birds, in particular, exhibit many remarkable skills once thought to be restricted to humans: Magpies recognize their reflection in a mirror. New Caledonian crows construct tools and learn these skills from their elders.
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