Fig. 5. Spatial distribution of first visits to feeders (i.e. excluding revisits during trials) at the 64-feeder array during trials 1–3 (A) and trials 11–20 (B) by all 17 individuals in all n trials. Circle diameters are proportional to the percentage of first visits directed at that feeder (same scale for A and B). Amounts of single food rewards were equal at all feeders (see Materials and methods). The shortest path between cage exits and feeder array was to the bottom left corner of the array (about 3–4 m from the different cages).