Ключевые слова: agelaius, aggressive, alberta, avian, bird, black, blackbird, bold, brackish, call, canada, colonies, dimorphic, display, epaulet, flock, grass, green, guard, habitat, impress, male, marsh, migrate, north america, passerine, patches, phoeniceus, polygamous, red, redwing, redwinged, sing, sit, song, spring, studied, swamp, territorial, territory, thrush, vocalization, watch, wetlands, whistle, wildlife, wing, winged,