The Asian songbird crisis which is currently unfolding in Southeast Asia has seen multiple bird taxa go extinct in the wild and even more slip into regional or local extinction over the span of only a few years. The hill mynas Gracula spp. are among its main victims, encompassing the Critically Endangered Nias Hill Myna Gracula [religiosa] robusta and other endangered populations across the West Sumatran Archipelago. Hill mynas are known to be present throughout this island chain but the taxonomic relationships of West Sumatran Gracula populations remain poorly understood. We hypothesized that the unique history of this island chain may have given rise to multiple distinct insular forms. Here we use genome‐wide DNA data in concert with morphological analyses to investigate the evolutionary distinctness of these taxa. Our results identify one taxon that is surprisingly distinct despite lacking recognition in most classifications, the ‘Simeulue Hill Myna’ (taxon miotera), and a range extension of the Nias Hill Myna. Despite their lack of recognition, Simeulue Hill Mynas are genomically and morphologically as unique as their Nias counterpart, in accordance with the lack of glacial land bridges between the island of Simeulue and mainland Sumatra. Simeulue Hill Mynas went extinct in the wild sometime within the last 2–3 years, and the rescue of the last captive individuals should now be the highest priority.

中文翻译：

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基因组学和形态学数据有助于发现不可持续交易的山my辐射的灭绝过程

目前正在东南亚地区爆发的亚洲鸣禽危机已使多种鸟类分类在野生环境中灭绝，并且在短短几年内甚至更多地区性灭绝。小山 八哥Gracula spp。是其主要受害者之一，其中包括西苏门答腊群岛内极度濒危的尼亚斯·希尔·米纳·格拉库拉和其他濒危人群。众所周知，整个岛链中都存在山my，但西苏门答腊格拉库拉岛的分类学关系人群仍然知之甚少。我们假设该岛链的独特历史可能引起了多种不同的岛状形式。在这里，我们将全基因组DNA数据与形态分析相结合，以研究这些类群的进化独特性。我们的研究结果确定了一个分类单元，尽管在大多数分类中都没有得到公认，但却令人惊讶地与众不同：“ Simeulue Hill Myna ”（分类单元），以及Nias Hill Myna的范围扩展。尽管缺乏认识，但Simeulue Hill Mynas在基因和形态上与Nias对应物一样独特，这是因为Simeulue岛和苏门答腊岛之间缺乏冰川陆地桥梁。Simeulue Hill Mynas在过去2-3年内在野外灭绝了，现在应该将营救最后一个被俘虏的人作为头等大事。