| evolution of bird eggs in the absence of cuckoo parasitism. | historical introductions of species into new habitats can create rare opportunities to test evolutionary hypotheses, such as the role of natural selection in maintaining traits. this study examines two independent introductions of the african village weaverbird (ploceus cucullatus) to islands where selection on egg appearance traits is expected to differ markedly from that of the source populations. the color and spotting of village weaver eggs in africa are highly consistent within clutches, bu ... | 2005 | 16326805 |