Marshall, (1942) Nycticorax albicollis Lake Olomega The most abundant nocturnal bird but limited to open country, fields, edge of lake, canyon to dry washes and road across open country or of camp where bare ground for sitting. Along the road mentioned above, could see or hear one every few yards. Very bright yellow iris. Always on ground-very ground and very tame. Hop up in the air a foot or more. Any eyeshine seen in trees or slot at would prove to belong to Texas nighthawk or Whip-poor-will. Great ant calling every evening while we were there almost all night on moonlit nights. Very loud & rasping call altho pleasing when heard at a distance: "quint, quint, quint, coo-weee rolling ooo" Only time seen in woods was 9 or next near base tree at edge woods (10' from road) on W side lake which was only a few yards