in winter their [black-capped chickadees] their body temperatures drop nearly twenty degrees F each night to slow their metabolism to help survivie the cold. Their hippocampus, the part of the brain associated with memory, increases in size in late summer as the breeding season ends and seed caching begins. The better the memory, the more easily they'll find the cached seeds needed to survive the bitter cold.
— Aug 10, 2025 06:30AM
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