The design of some birds' nests varies because of social learning, rather than genetic relatedness or environmental conditions, showcasing distinct cultural practices among species.
Their analysis found that different groups of birds developed their own recognizable nest structures, revealing that group membership influenced nest variation more than size, weather, or DNA.
Birds that live together also build together, creating a group's specific architectural style, emphasizing cultural learning and social structure in animal behavior.
This research adds to evidence that humans aren't the only ones with cultural traditions; animals also engage in social learning, akin to tool use in dolphins.
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