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Yellow-billed Cuckoo (Coccyzus americanus) | Western Population considered federally threatened.   Yellow-billed cuckoos are reclusive riparian birds that visit North America briefly during the …

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Tooth Cave Spider (Tayshaneta myopica) | Federally Endangered Karst Arachnid The Tooth Cave spider (Tayshaneta myopica) is a nearly translucent, cave-dwelling arachnid that spends most of its life su …

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Tooth Cave Pseudoscorpion (Tartarocreagris texana) | Federally Endangered Arachnid Hidden deep within the limestone caves of western Travis County, Texas, the Tooth Cave pseudoscorpion (Tartarocreagr …

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Tooth Cave Ground Beetle (Rhadine persephone) | Federally Endangered Cave Insect     Named after Persephone, queen of the underworld, the Tooth Cave ground beetle (Rhadine persephone) spend …

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Kretschmarr Cave Mold Beetle (Texamaurops reddelli) | Federally Endangered Insect Deep beneath Texas’ Edwards Plateau, the tiny Kretschmarr Cave mold beetle (Texamaurops reddelli) lives in tota …

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State & Federally Endangered Mollusk    The Texas Pimpleback is a rare freshwater mussel found in the spring-fed rivers and streams of the Colorado River basin in Texas. These mussels …

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