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Why Red-Winged Blackbirds Attack Chicagoans

Posted on June 6, 2024   |   Updated on September 30, 2025
Sidney Madden

Sidney Madden

A male red-winged blackbird in Chicago

A male red-winged blackbird in Chicago. (John Picken / Wikimedia Commons)

Raise your hand if you’ve been personally victimized by a red-winged blackbird ✋

You’re not alone: Chicagoans are reporting the aggressive bird is back and attacking again. Here’s what to know and how to protect yourself.

When Did Red-Winged Blackbirds Return?

Male red-winged blackbirds come back to Illinois as early as January while female birds return in March and April, according to the Illinois Department of Natural Resources. They primarily stay in Southern and Central Illinois in the winter, but can be found across the state in the summer.

Now, it’s nesting season through July, which means Chicagoans are going to want to be on their toes …

A red-winged blackbird attack told in three parts.

A red-winged blackbird attack told in three parts. (Citizen of the Planet / Education Images / Universal Images Group / Getty)

Why Do Red-Winged Blackbirds Attack?

Males become aggressive if you get too close to their nests, which are often near water. That's why we hear about lots of incidents along the lakefront. The size of the predator doesn’t matter — the birds are fiercely protective. Plus, male red-winged blackbirds usually have multiple mates, which means multiple nests to defend.

So How Do You Avoid Being Divebombed?

  • Walk in a group
  • Avoid low branches
  • Wear a hat (maybe even a hard hat)

👇 Tell us where to avoid red-winged blackbirds in the city.

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