Although they span most of North America, Red-winged Blackbirds (Passeriformes: Icteridae: Agelaius phoeniceus) are absent here in Michigan in the winter. In the summer, however, they’re exceedingly abundant. I frequently see males high atop trees, cattails, and other foliage calling for females. They seem especially common in wetland areas, but I often see them in meadows and on the edges of fields as well.
During breeding season males establish territories and vigorously defend them from intruders. Most males breed with multiple females, and some can host over a dozen nesting females in their territories.
Females bear much plainer plumage, perhaps to help them blend in with their surroundings. They tend to build their nests in low foliage just above the ground or water. These structures are intricately woven, providing sturdy homes in which to rear the next generation.