AnimalsBirdsNightjars — Family Caprimulgidae
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Whip-poor-wills — Genus Caprimulgus
Ours are synonymous with genus Antrostomus, but that genus is not yet recognized by ITIS, and the Mexican Whip-poor-will (A. arizonae) is not accepted by ITIS as distinct from the Eastern Whip-poor-will.
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Nighthawks — Genus Chordeiles
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Common Pauraque —  Nyctidromus albicollis [1]
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Common Poorwill —  Phalaenoptilus nuttallii [1]
Evidence that species is found in Texas:
  1. Texas Bird Records Committee, the committee of the Texas Ornithological Society that maintains the official Texas state list of birds.