"Poor-will" (Ayetidromus?) Nov. 3 5km N Villavicija, 1400 ft, Huila, Colombia, S.A. Took one alive by hand about 2 km. S of camp beside R.R. Tracks. Blinded by light; it fluttered straight up into the air about 20 ft., and descended to same spot. I knocked it down and captured it as it rose a second time. Several times it suddenly opened the mouth widely when finger poked near it, but made no attempt to bite. Could this be intended to frighten aggressor?