An ant no larger than a grain of rice is drawing the attention of conservationists on some of the world's most fragile islands. The Argentine ant (Linepithema humile), introduced to many regions through human activity, has spread well beyond its native range over the past century. Researchers have documented the invasive insect attacking newly hatched seabird chicks in Hawaii and Portugal's Desertas Islands, highlighting how even small invaders can pose unexpected challenges for wildlife conservation.
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