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