Did you know that “Red-winged Blackbirds are one of the most polygamous of all bird species [?] They have been observed to have as many as 15 females nesting in the territory of a single male. On average, a single male has roughly five females in its territory.” (WildlifeUnlimited, All About Birds)
The females build their nests by weaving “together supporting pieces of vegetation and then intertwine the walls of the nest onto these supports.” (WildlifeUnlimited). “One nest picked apart by a naturalist in the 1930s had been made by weaving together 34 strips of willow bark and 142 cattail leaves, some 2 feet long. When finished the nest is 4 to 7 inches across and 3 to 7 inches deep.” (All About Birds)
Here in our wetland marshes, the nests are very often set in the crooks of the branches of Pond Apple trees.
It sometimes seems there are RWBB nests everywhere in the spring and early summer. That may be because . . . “Each pair of Red-winged Blackbirds raise 2-3 broods per season. Each time they build a new nest, which keeps the nest from becoming infected with parasites that could kill the baby birds.” (source, WhatBird).
The RWBB‘s are very active now, so hopefully we’ll soon see their nests popping up again for the new season!