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Fig. S1 Control experiments testing the hamsters’ preference for seeds imbibed once (light blue) or twice (blue), and for artificially (light red) and naturally (red) soft seeds.

Table S1 Composition of seed volatiles released by dry seeds (‘dry’) and seeds after 20 h of incubation in water (‘H2O’)

Table S2 Composition of the volatile cocktails offered to the hamsters

Table S3 Experimental design and statistical analysis of the seed predation experiments