该鸟体长约85厘米，羽毛以灰白色为主，飞羽呈黑色，最具特色的是它粗壮的钳形巨嘴，闭合时呈现明显的弧形缺口，如同自带开壳工具。这种特殊构造是长期演化形成的进食利器，能够有效夹碎螺类等软体动物的外壳。
Amazon is offering Apple's latest M3 MacBook Air at a $300 discount. I must admit, it's quite appealing.
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The Oxford researchers proposed that the large spontaneous waves of brain activity that occur during deep sleep, or non-rapid eye movement sleep (non-REM), might suppress the brain activity that leads to tinnitus.