Fig. 6. Reactions of wild free-flying male Polyommatus icarus to dummies made from flavonoid-rich (open columns) and flavonoid-free (filled columns) females. The proportion of males passing by did not differ between flavonoid-rich and flavonoid-free males (²₁=0.09, P=0.76). The flavonoid-rich dummies elicited the more intense fluttering behaviour in more males (65.3%) than did the flavonoid-free dummies (41.6%) (²₁=10.58, P<0.001).