Skip to Content
Featured

A Swarm of a ‘Billion’ Painted Lady Butterflies Is Migrating Through Southern California

6:54 PM PDT on March 11, 2019

[dropcap size=big]A[/dropcap] massive swarm of at least 1 billion butterflies is traveling across Los Angeles and neighboring counties at a breathtaking speed of almost 20 miles an hour, reports said.

The butterfly species Painted Ladies, cousins to the Monarch butterfly, are in a rush to reach breeding areas in Oregon after spending winter in the deserts of northern Mexico, according to Tom Merriman, a director of a butterfly non-profit group in Encinitas, in an interview with the Pasadena Star News. “They’ve laid tons of eggs in the desert, and so there may be over a billion butterflies,” Merriman told the paper.

Social media users in L.A. reported seeing the fluttering insects across the region, from Glendora to the beaches to South-Central L.A. Butterflies floated quickly across Martin Luther King Jr. Boulevard in South L.A. from downtown to Leimert Park.

RELATED: 'We Mostly Sold Burritos': Taco Truck Serves Breakfast For Motorists Stuck on 105 Freeway After Fiery Crash

Experts said the migration is prompted also by California’s heavy winter rains. Butterflies had actually become scarce in California during the prolonged previous drought, the L.A. Times noted.

* Updated.

RELATED: The Best Mexican Food in South-Central L.A. ~ An L.A. Taco Guide

SUBSCRIBE TO L.A. TACO VIDEOS ON YOUTUBE!

Stay in touch

Sign up for our free newsletter

More Stories

Sunday Taquitos #32: Total Recall

Sunday Taquitos! Art by Pulitzer Prize Finalist Ivan Ehlers.

August 23, 2026

What to Do If a Federal Immigration Agency Kills Your Loved One

We consulted multiple lawyers, an immigration group, and the Consulate of Mexico to create a guide we hope you never need.

L.A.’s Best Arepas Find a Permanent Home In Mar Vista

For seven years, you could only find these loaded Venezuelan beauties made with nixtamalized maiz criollo at a few farmers markets. Now you can find them any day of the week.

August 21, 2026

Altadena Residents Haunted By Flock Cameras Installed After Deadly Fire

“Altadena has spoken,” Shawna Dawson Beer tells L.A. TACO. “We don't want surveillance cameras. We don't want Flock replaced by another company's cameras. We don't want to play surveillance company whack-a-mole. We want a say in whether this technology is deployed in our community at all.”

August 21, 2026

Are The Lakers Still L.A.’s Team?

We asked some hardcore fans and the answer is somewhere between a theory that their latest purchase will get them ready to move the team to Vegas or using the Lakers as a pawn for political influence.

August 20, 2026

Who Won Last Night’s Debate Between Nithya Raman and Karen Bass?

The homeowners of the San Fernando Valley may have been the real winners in the end. Here are our thoughts.

August 20, 2026