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Fig. 5. Spatial distribution of first visits to feeders (i.e. excluding revisits
during trials) at the 64-feeder array during trials 13 (A) and trials
1120 (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 34 m
from the different cages).