https://trip.aeiou.tw/p/43323/%e8%b5%b0%e9%81%8d%e7%be%8e%e5%9c%8b%ef%bc%8827%ef%bc%89%e8%a8%98%e6%86%b6%e7%be%8e%e5%9c%8b%e5%8b%95%e7%89%a9-%e9%b3%a5bird%ef%bc%882%ef%bc%89usa-species-richness/