North American Red-winged blackbirds (Agelaius phoeniceus) males arrive at cattail marshes before females each spring. They actively defend areas of the marsh as individual territories. Females choose a territory (and its male) as a place to breed and build a nest. If a male has a high-quality territory, he can form pair bonds with multiple females. Nests are vulnerable to attack from raccoons and other animals. Predation of the eggs and nestlings has a serious impact on reproductive success. Nests that are concealed among the cattails and suspended over water are less vulnerable to predation. Which type of mating system do Red-winged blackbirds have?
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Home » Biology » North American Red-winged blackbirds (Agelaius phoeniceus) males arrive at cattail marshes before females each spring. They actively defend areas of the marsh as individual territories.