Join us as we track the monarch's migration to Mexico.

The magnificent migratory generation is developing now. Watch for the 1st signs of fall migration in mid-August.

Sightings of southbound monarchs, intense nectaring, and the first overnight roosts are being reported.

What does a tagged monarch, found in Toronto, tell us about migration?

Building fat reserves as they move toward Mexico, where can monarchs find the nectar they need?

People are counting monarchs roosting by the hundreds, feeding by the dozens, and flying overhead at rates up to 37 per hour.

Who's watching monarchs — and what can we learn about migration from their observations?

Citizen science has revealed the monarch's migration flyways, and this year's butterflies are traveling along the predicted pathways.

The migration's leading edge advanced by over 300 miles this week and is now 800 miles from the overwintering sites in Mexico.

All eyes are on the sky as peak migration moves into Texas. How high do monarchs fly — and how high can we see them.

Headwinds Slow Migration
October 20, 2016

The migration is moving southward slowly, with persistent south winds holding the butterflies back. Seee what migration data predicts about the population.

¡Bienvenidas a México!
October 27, 2016

Monarchs are streaming across northern Mexico now — and the very first butterflies have reached the winter sanctuaries!

"As if by magic, rain and dark clouds pulled apart overnight and the first monarchs appeared..."

What happens month-by-month while the monarchs are in Mexico?

Tracking Migration with Journey North
Report your sightings to each fall and spring as the monarchs travel to and from Mexico. Track migration on real-time migration maps. Help scientists learn more about monarchs.

 

Archives: Spring 2016