Monarch Butterfly Migration Update: March 28, 2001
Today's Report Includes:
Field Notes from Along the Migration Trail
Here are comments from some of the observers:
Female Egg-Laying Strategy
The appearance of multiple eggs on a single plant is known as "egg loading." Observers should watch for this whenever they check their milkweed plants, and report these observations with their comments. Monarchs usually lay only one egg per plant, so egg loading is thought to occur when there is not enough milkweed in an area. What do you suppose the female monarch's strategy is?
Milkweed Emerging on the Migration Trail
This map shows where observers have reported milkweed emerging so far this spring:
As the map shows, we need more observers! Please help us monitor the spring emergence of the monarch's food plant across North America.
Predicting the Route of the Monarch's Spring Migration
As the monarchs pour out of Mexico this spring, we're watching them spread across Texas. Where do you think they will appear next? New Mexico? Oklahoma? Arkansas? Louisiana? (You might be surprised!)
Print out the blank migration map below and draw the course you think the migration will take. Then record the names of the states where you think the butterflies will appear 1st, 2nd, 3rd, 4th, 5th etc. on your Migration Route Prediction Chart.
(To respond to this question, please follow
the instructions below.)
This Week's Migration Update for Sanctuary Area Students
As the butterflies fly over your homes, schools and cities, we're sending the news back to the students in Mexico so they can track the migration too. Here is this week's report in Spanish, with an English translation:
"It is important to continue a friendship with students who see the same butterflies that travel from one backyard to another, thousands of miles away," said Seruando Nieto Gomez, teacher at Lazaro Cardenas Primary School.
Try Journey North's New GIS Map Server
Now you can explore monarch migration with interactive maps using data from the past five seasons (1997-2001). Warning: A fast Internet connection--and patience--are important when using the GIS map server. It's a wonderful system, but it can be very slow, especially over school networks with multiple computers. We hope you'll enjoy it!
How to Respond to Today's Monarch Challenge Questions:
1. Address an e-mail message to: email@example.com
Copyright 2001 Journey North. All Rights Reserved. Please send all questions, comments, and suggestions to our feedback form