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Migration Rate Math
Who saw the strongest migration this week?
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Week Ending October 26, 2007
Here are a few of this week's observations. Read the comments and calculate the migration rate for each.
Record this fall's most impressive observations on your Record Sheet and add your favorites to your own Migration Highlights Map.

10/24/07 Victoria, TX
While driving in my car on the main street in Victoria I began to notice a number of Monarch butterflies flying overhead at about the level of the powerlines. Approximately every 5-10 seconds, while driving at 40 mph one or two monarchs would cross over the car. They all moved at about the same level and all flew in the same direction, seemingly with a purpose as they only moved in straight lines. Over the course of that day and the following I noticed them everywhere I went. They typically seemed to fly alone, although on occassion two could be observed moving together.

10/24/07 Port Lavaca Causeway, TX
My wife Altus said there were more monarchs than she had ever seen. Fantastic numbers between 2-4 pm falling out in the area. I started out across the causeway when I went back and counted 89 monarchs coming at me in the first mile and
then just quit counting.

10/23/07 Arlington, TX
I have spotted the monarchs for a week or so from my office, but today I have seen on the average of 360 an hour.

10/23/07 Mineral Wells , TX
Today the wind was blowing NW 8 mph and Ms. Stringer's class observed 41 monarchs in a 20 minute time period. The butterflies were flying and gliding without stopping. The early morning temperature was the coolest this fall at 49 degrees F. The temperature during the sighting was 67 degrees F. The size of the monarchs was a mixture of large to small.

10/23/07 Lytle , TX
We saw hundreds of monarchs here today: around nine this morning warming up on the sunny side of the live oaks they were roosting in, passing our house this afternoon at a rate of about 25 per hour, then by the hundreds in the live oak groves at roost time. The most we have seen in several years.