Isabelle, André L.2009-03-202009-03-2019881988Source: Masters Abstracts International, Volume: 40-07, page: .9780315467828http://hdl.handle.net/10393/5461http://dx.doi.org/10.20381/ruor-14370Biology, General.The role of predation in the adaptive value of coloniality and polygyny in the yellow-headed blackbird, Xanthocephalus xanthocephalus.Thesis