Summary of published studies on egg rejection responses (relative to controls) to experimental brood parasitism, where the methodology included manipulations to increase intraclutch egg appearance variation.^{^a}

a “Parasite Mim./Nonmim.” indicates whether natural parasitic eggs mimic those of hosts. “Exp. Mim./Non.” indicates whether eggs used in artificial parasitism mimicked those of hosts. “Effect” indicates the induced change in the rate of rejection of experimental eggs. b To our knowledge, this is the only previous study to experimentally both increase and decrease intraclutch color variation. Summary of published studies on egg rejection responses (relative to controls) to experimental brood parasitism, where the methodology included manipulations to increase intraclutch egg appearance variation.a