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In birds, the brain (especially the telencephalon) is remarkably developed, both in relative volume and complexity. Unlike in most early‐branching sauropsids, the adults of birds and other archosaurs have a well‐ossified neurocranium. In contrast to the situation in most of their reptilian relatives but similar to what can be seen in mammals, the brains of birds fit closely to the endocranial cavity...
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