Spot-tailed Nightjar

The spot-tailed nightjar (Antiurus maculicaudus) is a species of nightjar in the family Caprimulgidae. It is the only species placed in the genus Antiurus. It is found in Honduras, Mexico, Nicaragua, and every mainland South American country except Chile and Uruguay. == Taxonomy == The spot-tailed nightjar was formally described in 1862 as Stenopsis maculicaudus by the American amateur ornithologist George Newbold Lawrence. His specimen had been collected in the Brazilian state of Pará. The specific epithet combines the Latin macula meaning "spot" with cauda meaning "tail". The spot-tailed nightjar was formerly placed in the genus Hydropsalis but based on the results of a 2014 molecular genetic study by Snorri Sigurðsson and Joel Cracraft, it is now the only species placed in the resurrected genus Antiurus that had been introduced in 1912 by the American ornithologist Robert Ridgway. The genus name combines the Ancient Greek αντιος/antios meaning "different" with ουρα/oura meaning "tail". The species is monotypic: no subspecies are recognised. == Description == The spot-tailed nightjar is 20.3 to 21.5 cm (8.0 to 8.5 in) long. Males weigh 28.3 to 35.2 g (1.0 to 1.2 oz) and females 26.0 to 39.0 g (0.92 to 1.4 oz). Their upperparts are brown…