总结以下内容至3句话以内，内容需要包含 expedition team发现和puffin的数量。  
In a groundbreaking discovery, the expedition team has unearthed a hidden colony of Atlantic puffins (Fratercula arctica) on a remote Scottish island, believed to have been undiscovered for centuries. Initial estimates suggest that the colony numbers in the thousands, with the potential for these numbers to increase as the area is further surveyed. The revelation has thrilled wildlife enthusiasts and conservationists alike, as Atlantic puffins are classified as a vulnerable species by the International Union for Conservation of Nature (IUCN).
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探险队在一个偏远的苏格兰岛屿上发现了隐藏数世纪的 millions 海鹦群落，估计数量达到数千只，且实际数量可能更多。这一发现令野生动植物爱好者和保护者们感到振奋。
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