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Fig. 5. Bee speed and relative position. (A) Flight speed of the two landing bees shown in Fig. 3 (morning plots: black line, 36 min before sunrise; gray line, 12 min before sunrise). (B) Mean speed of each flight plotted in Fig. 4 relative to landing duration, and a linear regression (slope=–0.01, intercept=19.65) that explains little of the variation (r²<0.001) and is not significantly different from no slope (t=0.04, d.f.=35, P=0.48). (C) Cumulative path lengths of the same sample flights from A; the value at landing (time=0) is the total path length. (D) Total path lengths of each flight relative to landing duration, and a linear regression (slope=19.37, intercept=2.75) that explains most of the variation (r²=0.88), and is significantly different from no relationship (t=16.08, d.f.=35, P<0.001) (E) Absolute distance from the nest entrance as the sample flights from A progress, showing multiple crossings of the 15 cm threshold (gray horizontal line). (F) The number of approaches closer than this threshold versus landing duration, for each flight in all sampled bees. The regression (slope=0.23, intercept=0.58) is significant (r²=0.73, t=9.67, d.f.=35, P<0.001). In each figure, upward triangles mark morning flights, downward triangles mark evening flights.

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