Marshall, 1945 63. Palau Small Gecko Keros: Common. Nocturnal. Arboreal, but only lower in bushes. Must spend day in holes in rocks, because out in the jungle & the ridge, they begin calling late in afternoon, even before sunset. Call, heard also in the evening is a gurgling sound with a few chips interspersed & sounds like stomach-noises. Found in buildings commonly. Strictly nocturnal foraging. Smooth skin. Area (Saipan. Small geckos have a sharp chirp - given in accelerating series.) Can change color from pale buff to blotchy black according to color of wood on which they crawl. Can move rapidly.