| the evolution of sexual size dimorphism in the house finch. ii. population divergence in relation to local selection. | recent colonization of ecologically distinct areas in north america by the house finch (carpodacus mexicanus) was accompanied by strong population divergence in sexual size dimorphism. here we examined whether this divergence was produced by population differences in local selection pressures acting on each sex. in a long-term study of recently established populations in alabama, michigan, and montana, we examined three selection episodes for each sex: selection for pairing success, overwinter s ... | 2000 | 11209788 |