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Analysis of where ants look before and after the trees were removed. (a) Normalized frequency of the retinal position of the ants. Nest position is at 0° and is highlighted by a vertical line (green). Foraging tree direction is at±180°. (b) Normalized frequency of absolute gaze direction of ants. Gaze direction is relative to the external coordinate system of north (N), south (S), east (E) and west (W). For both (a,b) data were normalized to the maximum for each night.
