Fig. 7. Glide index (horizontal distance/vertical distance) for ants landing on each colored sheet presented individually. Bk, black; Dk, dark gray; Gy, gray; Wh, white; Yl, yellow; Rd, red; Bu, blue; Gr, green. Values are means ±95% C.I.; number pairs indicate the number landing on each sheet out of the total number dropped (i.e. the first in each pair is the sample size for the plotted mean).