Jim Gilbert's Nature Notes: Migrating monarches

  • Article by: JIM GILBERT , Special to the Star Tribune
  • Updated: August 14, 2014 - 2:25 PM

Of all the autumn migrants, perhaps the most remarkable is the monarch butterfly.

Some local monarchs are still emerging from the chrysalis stage this time of year. For about eight more weeks, until mid-October, we can still enjoy the black-and-orange beauty of their 4-inch wingspans over prairies, meadows and gardens. But for the next three weeks the monarch migration is at its peak.

Incredible as it may seem, these fragile wisps of life are as successful at migration as most birds.

Migrant monarchs can live up to 10 months, non-migrants for about 30 days. During the summer there may be two or three generations of new monarchs, thus increasing the final population of migrating monarchs.

August is monarch butterfly month in Minnesota, where the insect was named official state butterfly in the year 2000. We see them between May and October, but it’s late summer when their numbers are greatest. Monarchs are now seen roosting in groups, sometimes masses of them. These aggregations tell us their migration has begun.

They travel individually, not in flocks, and fly anywhere from ground level to about 7,000 feet in the air. They save energy by riding thermals.

Every year millions of monarchs make the journey from the eastern United States and southeastern Canada to the fir forests in the mountains northwest of Mexico City to take shelter for the winter.

Jim Gilbert’s Nature Notes are heard on WCCO Radio at 7:15 a.m. Sundays. His observations have been part of the Minnesota Weatherguide Environment Calendars since 1977, and he is the author of five books on nature in Minnesota. He taught and worked as a naturalist for 50 years.

  • get related content delivered to your inbox

  • manage my email subscriptions

Click here to send us your hunting or fishing photos – and to see what others are showing off from around the region.

ADVERTISEMENT

Buffalo 12/28/14 12:00 PM
New England
Cleveland 12/28/14 12:00 PM
Baltimore
Dallas 12/28/14 12:00 PM
Washington
Indianapolis 12/28/14 12:00 PM
Tennessee
Jacksonville 12/28/14 12:00 PM
Houston
San Diego 12/28/14 12:00 PM
Kansas City
NY Jets 12/28/14 12:00 PM
Miami
Chicago 12/28/14 12:00 PM
Minnesota
Philadelphia 12/28/14 12:00 PM
NY Giants
New Orleans 12/28/14 12:00 PM
Tampa Bay
Carolina 12/28/14 3:25 PM
Atlanta
Detroit 12/28/14 3:25 PM
Green Bay
Oakland 12/28/14 3:25 PM
Denver
Arizona 12/28/14 3:25 PM
San Francisco
St. Louis 12/28/14 3:25 PM
Seattle
Cincinnati 12/28/14 7:30 PM
Pittsburgh
Marshall 52 FINAL
Northern Ill 23
Navy 17 FINAL
San Diego St 16
Central Mich 48 FINAL
Western Ky 49
Fresno State 6 4th Qtr 10:07
Rice 30
Illinois 12/26/14 12:00 PM
Louisiana Tech
Rutgers 12/26/14 3:30 PM
North Carolina
NC State 12/26/14 7:00 PM
UCF
Cincinnati 12/27/14 12:00 PM
Virginia Tech
Duke 12/27/14 1:10 PM
(15) Arizona State
Miami-Florida 12/27/14 2:30 PM
So Carolina
Boston College 12/27/14 3:30 PM
Penn State
(25) Nebraska 12/27/14 7:00 PM
(24) USC
Texas A&M 12/29/14 1:00 PM
West Virginia
Oklahoma 12/29/14 4:30 PM
(18) Clemson
Arkansas 12/29/14 8:00 PM
Texas
Notre Dame 12/30/14 2:00 PM
(22) LSU
(13) Georgia 12/30/14 5:45 PM
(20) Louisville
Maryland 12/30/14 9:00 PM
Stanford
(9) Ole Miss 12/31/14 11:30 AM
(6) TCU
(21) Boise State 12/31/14 3:00 PM
(12) Arizona
(8) Miss State 12/31/14 7:00 PM
(10) Georgia Tech
Connect with twitterConnect with facebookConnect with Google+Connect with PinterestConnect with PinterestConnect with RssfeedConnect with email newsletters

ADVERTISEMENT

ADVERTISEMENT

ADVERTISEMENT

ADVERTISEMENT

question of the day

Poll: Should the lake where the albino muskie was caught remain a mystery?

Weekly Question

ADVERTISEMENT

 
Close