Fig. 8. In situ colour changes of an individual crab exposed to several days of dummy bird predation. (A–C) Pairs of video images of a female U. vomeris at the beginning (left), in the middle (centre) and at the end (right) of her entire activity period. (A) First day of dummy bird treatment. (B) Third day of dummy bird treatment. (C) Day 4, on which treatment was discontinued. Note colour changes throughout activity period and as a consequence of dummy bird predation.