Nacunda nighthawk
The nacunda nighthawk ("Chordeiles nacunda") is a species of nightjar in the family Caprimulgidae. It is found in Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Peru, Suriname, Trinidad and Tobago, Uruguay, and Venezuela. Its natural habitats are dry savanna, subtropical or tropical seasonally wet or flooded lowland grassland, and heavily degraded former forest. Taxonomy. The species was formerly placed in the monotypic genus "Podager", but was reclassified into the genus "Chordeiles" in 2011. The former generic name "podager" originates from the Latin meaning "a man suffering from gout" and reflects the awkward walking manner of  this nighthawk. The specific name "nacunda" is derived from the Guaraní word for a "big-mouth". Description. The nacunda nighthawk is not only the largest of the highly aerial nightjars known as nighthawks and the largest species of nightjar in the neotropics, it is one of the largest species in the world. Its length, at , is somewhat less than the great eared-nightjar, which is typically considered the largest species in the family, but the nacunda may actually weigh a bit more on average. Six specimens of nacunda nighthawk were found to average in body mass, with range of . Its  very large size, large head, and pale body with highly contrasting black primaries make the nacunda nighthawk easy to identify. This species is noteworthy for its partially diurnal habits. Though a capable aerial forager, the nacunda nighthawk spends a considerable amount of time on the ground; it has notably long tarsi for a nightjar, and is more likely than other species to be seen standing on the ground, rather than resting on the surface.