Butterfly Migration Update: March 5, 2004
Field Notes from Mexico by Dr. Bill Calvert
How Many Butterflies Trees?
Comparing Tree Counts
The El Rosario monarch colony was quite large in mid-winter. An estimated 4.5 hectares of trees were filled with butterflies. In his report, Dr. Calvert challenges you to compare that to the 20 butterfly trees now remaining. He says to assume there are 400 trees in a typical hectare of oyamel forest. So...
Simplifying Monarch Math for Young Students
Here’s a worksheet to help young students visualize this math problem. It shows 400 circles, each representing a tree. Therefore, the page represents one hectare of forest. Use it to compare the population sizes in mid-winter and March. Students can copy, cut and paste the number of butterfly trees at both points in time--then answer the question above.
Virginia Teacher Delivers Surprise to Sanctuary Students
Mariposa, Migratoria y Microclima: Vocabulary with Noemi
What do these words have to do with monarch butterflies? Mexican student Noemi de Jesus and her dad show you how to pronounce 28 words in Spanish. Can you translate them into English? Can you use each word in a sentence about monarchs over-wintering in Mexico?
Discussion of Challenge Question #6
How Does Rainy Season Help?
First Migrants in Texas?
Exciting news arrived from Mike Quinn of Texas Monarch Watch: Two adult butterflies were reported in central Texas. Are these the first migrants of the season?
Try This! Predicting the Route of the Monarch’s Spring Migration
As the monarchs pour out of Mexico this spring, where do you think they’ll go?
List the states & provinces in the order in which you predict the butterflies will arrive. Form a hypothesis as to why the monarchs will travel as you predict. Revisit this question all spring as you watch the butterflies spread across their northern breeding range. Revise your predictions and hypothesis as you learn new information.
Discussion of Challenge Question #7
What About Gulf Coast Monarchs?
The migration map shows red triangles where monarchs were reported during the winter months. Challenge Question #7 asked you to speculate whether those butterflies will migrate. Iselin Middle School’s Grade 7 students shared their prediction:
Nobody knows, but with enough reports the migration pattern may be revealed!
Monitoring Habitat While You Wait
Checklist for Spring Observations
Journey North is a study of migration and seasonal change. As spring moves across the continent, we watch the interrelationships in nature build anew.
My Monarch Habitat in...Secret Volunteers Needed for Challenge
We’re looking for volunteers who will send 3 photos of their local monarch habitat, along with geographical clues, for a future Challenge Question. Everybody else will have to figure out where in the monarch’s breeding range you’re located!
If you're interested, please contact us to schedule a date in March, April or May: firstname.lastname@example.org
How to Respond to Today's Challenge Question:
Address an e-mail message to: email@example.com
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