Agelaius thilius 12 Brood parasitism 8 Molothrus bonariensis 8 Yellow-winged Blackbird 8 Egg punctures 4 Parental care 4 Sexual size dimorphism 4 Shiny Cowbird 4 Shiny cowbirds 4 Yellow-winged blackbirds 4 Agelaius 2 Colonial nesting 2 Costs of parasitism 2 Egg synchronization 2 Molothrus 2 Nest failure 2 Turdus merula 2 animal experiment 2 article 2 bird 2 breeding 2 brood parasitism 2 egg development 2 egg polymorphism 2 female 2 host selection 2 host-parasite interaction 2 host-parasite relationship 2 incubation time 2 nonhuman 2