Supplementary Figure 1 from Polydomy enhances foraging performance in ant colonies StroeymeytN. JoyeP. KellerL. 2017 Temnothorax nylanderi workers after feeding with 10% honey solution mixed with blue food colouring. The blue colouring is clearly visible through the ants’ cuticle. The intensity of the blue pigmentation varies depending on the amount of food ingested. Picture credit @Romain Libbrecht.