Monarch Butterfly Migration | Journey North Citizen Science Project: Tracking Spring and Fall Monarch Butterfly Migration

Monarch Butterflies

Monarch Butterfly News: August 2015
By Elizabeth Howard

Please Report
Your Sightings!

Get ready to 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.

Monarch Butterfly Nectaring on Milkweed
Elizabeth Howard

News: Get Ready for Fall Migration

Monarchs born in the north after mid-August will be the first members of the migratory generation. Get ready to watch for signs that the fall monarchs is underway!

Population Building
Monarchs produce four generations during the typical breeding season and the population grows with each new generation. Monarch numbers reach their peak by fall migration. At no other time of year is the population larger.

The generation that's developing now will be the great-great-grandchildren of the monarchs that left Mexico last spring. These butterflies have a long and challenging life ahead: they will migrate to Mexico this fall, survive the winter, and return in spring 2016 to begin the breeding season anew.

Join us!
When you see a monarch, we want to know. Please report your sightings and help track fall migration 2015.

Never More Monarchs
Elizabeth Howard

What to Report
When you see a monarch, we want to know.

Spotlight: Monarch Cycles


Life Cycle	Annual Cycle	Count Generations

Maps: Report Your Sightings


What to Report	Summer Sightings report \| map \| list

First Fall Migration Update August 20, 2015