【明德原创】红腹啄木鸟生活在北美大陆。攀木觅食时以嘴叩树,叩得非常快,频率达每秒15-16次。头骨十分坚固,大脑周围有一层绵状骨骼,内含液体,对外力能起缓冲和消震作用;头骨周围还具有起减震作用的肌肉,能把喙尖和头部始终保持在一条直线上。
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