Summary

This episode takes on one of North America's most recognizable birds: the Red-winged Blackbird, Agelaius phoeniceus. With a population possibly approaching 200 million, this species is a fixture of wetlands and marshes across the continent, and one of the most intensively studied birds in ornithology.

Ivan explores the biology and behavior that make this bird so compelling: its striking sexual dimorphism, the surprisingly complex story behind those iconic red epaulets, and a breeding system that turns out to be far messier than it first appears. Territorial wars, interspecies conflict, and the occasional human casualty are all part of the picture.

The episode also digs into the Red-winged Blackbird's fraught relationship with agriculture—from the enormous crop damage these birds can cause to the high-tech and sometimes controversial methods farmers use to manage them. And despite being among the most abundant birds on the continent, the species has seen a significant population decline over recent decades.

Research Citations

• Environmental Component of Morphological Differentiation in Birds
• Machine learning to detect, classify, and count blackbirds damaging agriculture using drone-based imagery
• Conditions of Competition Between Redwings and Yellow-headed Blackbirds

Photos

Attributions

• Red-winged Blackbird sounds (Xeno Canto recording XC775578: https://xeno-canto.org/775578)
• Red-winged Blackbird sounds (Xeno Canto recording XC1089594: https://xeno-canto.org/1089594)
• Red-winged Blackbird sounds (Xeno Canto recording XC75497: https://xeno-canto.org/75497)
• Red-winged Blackbird sounds (Xeno Canto recording XC137775: https://xeno-canto.org/137775)