Monarch Butterfly Migration Update: October 21, 2005
Today’s Update Includes:
Highlights From the Migration Trail
What a week! A staggering 193 monarch sightings were reported. Monarchs were seen as far north as Ontario, as far south as Nuevo Leon, and in almost every U.S. state in between. Again the biggest news was from the big state of Texas. For the third week, monarchs continued to stream across Texas skies at rates that amazed anyone watching.
Curious but true, monarchs butterflies do feed in pecan trees. There is a surprising reason for this, but it requires some detective work. Can you solve the mystery?
Migration News From Northern Mexico
While watching a soccer game in Santiago, Nuevo Leon, Cecelia Garza Mena saw her first monarchs of the year. This sighting, from 25 N, is the farthest south of any monarch reported!
Last Year One Million, This Year Not One! Dr. Calvert's Lesson
Exactly one year ago, a million monarchs filled the skies near Monterrey, Nuevo Leon, Mexico. Dr. Bill Calvert watched with wonder. "The densities were just stupendous; they were just absolutely astounding," he exclaimed at the time. He returned at the same time this year to see what he would find. Alas, he spent a day and a half looking and did not see one single monarch! "The lesson here is one that every monarch migration watcher knows: the monarch migration is fickle and they are sometimes held up by the weather! I suspect two or three days later after the weather cleared that they poured through in the usual manner."
Watching and Waiting at the Over-wintering Sanctuaries
Every year at this time we wonder, will the monarchs actually find this dot on the globe? No monarchs yet, says Estela Romero...
Challenge Question #8: Geography and Migration
After reading today's update:
Who Saw the Most Monarchs This Week? Migration-rate Math
Follow the link below to a few of this week's observations:
How to Report Your Observations
Put your monarch news on the map! Please send reports of monarchs flying, feeding, and resting. When you report your observations, include wind speed and direction. For instructions see:
The Next Monarch Migration Update Will Be Posted on October 28, 2005.
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