Plate 15- 91. The Nacunda Nighthawk, which measures 30 cm (12 in) long and has a white belly and prominent white wing
patterning, is one of the largest and most distinctive of the South American nighthawks. It often flies during the day and roosts
in the open. Photo by John Kricher.Plate 15- 92. The 35 cm (14 in) Common Potoo (Nyctibius griseus) in daytime
“tree snag” posture. Note that its offspring instinctively adopts the same
posture. Both birds are sleeping. Photo by James Adams.Plate 15- 93. The Great Potoo (Nyctibius grandis),
here photographed at night from its song and
hunting perch, is 52 cm (20.5 in) long. Both
the Common and Great Potoos are widely
distributed in Central and South America. Photo
by Andrew Whittaker.chapter 15 neotropical birds: the bustling crowd 295