In Florida I most often photographed Red-winged Blackbirds at north beach of Fort De Soto County Park where I could reliably find them in the sand dunes, sea oats, spartina and mangroves all year long.
Many species of birds on Antelope Island State Park are pigging out on wild sunflower seeds at this time of the year including Red-winged Blackbirds.
The plumage of male juvenile Red-winged Blackbirds is highly variable during their first year, some of the young blackbirds can look like females and some can look more like adult males.
Female Red-winged Blackbirds seem to be the birds that are most often misidentified probably because they look so different from the males. Red-winged Blackbirds are sexually dimorphic .