From loud barks to thunderous booms, hornbill cries resound across a range that extends from the dry savannas of sub-Saharan Africa to the lush forests of Melanesia.

• 无论在撒哈拉以南非洲的干燥热带草原还是在美拉尼西亚茂密的森林中都可以听到犀鸟如雷的叫声。