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Monarch Butterfly News: October 10, 2013
Please Report
Your Sightings!
Report Your Sightings
Long-awaited north winds swept the migration into Texas, and a late peak occurred at northern latitudes. Image of the Week
Monarch Butterflies nectaring in Iowa prairie
Finding Frostweed
Matt Irwin
News: Swept into Texas
With a push from the north wind, monarchs streamed into Texas this week.

"There was a major uptick in the number of monarchs today! A cold front passed through Saturday night and, as expected, the numbers jumped afterwards when the sun came out." October 7, Matt Irwin, Dallas, Texas

"There were a lot of Monarchs parked near Oklahoma City for a week, and prevailing wind was south or east (not north anyway) for several days," observed Gregg Lee who reported the largest roost for Texas on October 6th.

Late Northern Sightings
A surprising number of northern observers saw a strong flow of monarchs this week. Some even saw their highest counts of the season.

"A steady stream of monarchs are flying south west along the Lake Erie shoreline. About 300 butterflies per hour are moving through at tree top level or higher, with the odd one dropping down to fill up on nectar. It is not unusual to see a good migration tail this time of year. What was unusual this year was the lack of butterflies during the normal peak migration which occurs around September 15 at Clearville Park."
October 4, Steve Rankin, Clearville Park, Ontario

"Peak migration. Our butterfly bush was practically swarming with Monarchs all afternoon. The bush is in full sun and the temperature was about 17ÂșC."
Jennifer McPherson, October 8, Oakville, Ontario

Effects of a Warm Fall
Warm temperatures are giving monarchs more time to develop into adult butterflies. Also, persistent warm air masses with their southerly winds could be delaying migration.

Migration Window Closing
Late flyers are less likely to reach Mexico says Dr. Chip Taylor of Monarch Watch in Kansas.

"A fair number of monarchs are still in the area— two days before the end of the 'migration window' (4 October). We see monarchs after this date but the numbers diminish rapidly and tagging shows that the probability of monarchs reaching Mexico is less than 1/15th that of monarchs tagged within the migration window."
October 2 Lawrence, Kansas

Monarch Butterfly Roost in Texas
A Texas Roost
Gregg Lee
 
Monarch Butterflies nectaring in Iowa prairie
Texas Flyways
 
Monarch Butterflies nectaring in Iowa prairie
October in Ontario
Darlene Elliott
 
Tagged Monarch Butterfly Found
Tag Found
Jan Bose
 
Monarch Roost Count
Numbers Still Low
Monarch Population: Why the Decline?
Monarch numbers are down and people are wondering why. Examine the factors that caused the decline during the past year, and the downward trend over the past decade. Explore how you can help. Monarch Butterfly
News from Mexico: Letter from Estela
"In less than one month, monarchs should be arriving. Let me introduce you to our official monitoring children this season."

Monarch sanctuary region of Mexico
Tracking the Migration: Map and Journal
What to Report to Track Fall Migration Monarch Butterfly Migration Map: Peak Migration, Fall 2012 Worksheet: Journal Page
What to Report
Maps

Journal

Next Update October 17, 2013
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