北美山羊竟KO大棕熊 科学家曝惊人死状
文章来源: 中时电子报 于
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北美山羊(Mountain
Goat)通常是棕熊的猎物,不过近期加拿大一头山羊却成功避免让自己成为大餐,甚至还让一头母棕熊毙命,科学家指出,母棕熊被发现时,腋下及脖子都被山羊角刺穿。
英国《卫报》(The Guardian)报导,4日一名登山客在加拿大不列颠哥伦比亚省(British
Columbia)一处登山步道发现了一头母棕熊的遗体。经过尸检后,加拿大公园管理局(Parks
Canada)认定,这头仅重70公斤的母棕熊是被一头山羊刺死的,山羊角刺穿了它的腋窝及脖子。
加拿大公园管理局野生动物生态学家拉斯金(David
Laskin)表示,棕熊被猎物山羊谋杀的情况相当罕见,这还是他及同事们头一次亲眼看到这种事。
他说棕熊发动攻击时,会聚焦在头部、背面颈部、以及肩膀,所以通常是从上面发动攻击,山羊则会使用尖锐的羊角防御。
不过山羊栖息的环境让它们在躲避猎食者时占有一定优势,它们通常栖息在高海拔山区,能够敏捷地在高山岩石中行走,厚厚的白色外皮在它们移动时形成良好的保护色。
山羊最重可达125公斤,黑色羊角可长至12英寸,它们鲜少下山冒险,但是部分觅食区域和棕熊重叠,因此当两种动物相遇时,通常都很致命。
拉斯金指出,棕熊猎捕麋鹿等大型蹄类动物时,有时会让自己陷入险境。2018年,加拿大优鹤国家公园(Yoho national
park)一头棕熊试图延著岩石边缘靠近一头母山羊及小山羊,最终因为山羊栖息的悬崖壁太过陡峭无功而返。
拉斯金说,过去确实有听说过山羊出于防御杀死棕熊的案例,但真的非常少见,他赞叹这件事提醒人们:“大自然充满惊奇。”
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