Whippoorwill.
Source: Birds of New York (New York State Museum. Memoir 12), Albany: University of the State of New York. Plates by Fuertes later reproduced in Birds of America (1917?) by Thomas Gilbert Pearson (1873-1943) et al. http://en.wiktionary.org/wiki/File:Caprimulgus_vociferusAAP065B.jpg