Monarch Migration News: August 21, 2014
By Elizabeth Howard
Please Report
Your Sightings!
Report Your Sightings
Welcome to Fall Migration 2014! Share your sightings and help tell the story of the monarch's journey south. Monarch Butterfly
Telling the Story
Amy Evoniuk
News: Signs of Change
Shorter days and changing temperatures are about to trigger migration. The first signs that the journey south is underway are expected any day.

Emerging in Diapause
Monarchs change dramatically at this time of year, in physiology and in behavior. Adults are in diapause when they emerge from the chrysalis. They are full grown — but not reproductively mature. Their reproductive development will be on pause until February. These monarchs will not begin to mate until next spring in Mexico.

Becoming Migratory
Watch for signs of migratory monarchs:

  • flying in directional flight
  • roosting in clusters overnight
  • nectaring intensely

Appearing in the South
Beginning in late July, we suddenly received many reports of reproductive monarchs in central and southern states. Where are the monarchs coming from?

  • Are these early migrants coming down from the north and breeding or...
  • Have monarchs been present all summer but not in numbers large enough to detect?

If the monarchs originated in the north, their offspring are likely the 5th generation of the year.

Monarch Butterfly
Fall Migrants?
Randy Klauk
Monarch Butterfly
Appearing in the South
Gerald Axelbaum
5th Generation?
Maps: Report Your Sightings

What to Report to Track Fall Migration

Monarch Butterfly: Adult Sighted Monarch Butterfly: Egg or Larva Sighted
What to Report Adult Butterflies
map | list | animation
Eggs and Larvae
map | list
Monarch Butterfly Migration Map: Fall Roosts, Fall 2014 Monarch Butterfly Migration Map: Peak Migration Fall 2014 How You Can Help
Fall Roosts
map | list | archives | animation
Peak Migration
map | list | animation
  • How far to Mexico from your home town?
Next Update August 28, 2014