Journey
North News: Winter
& Spring 2007
Posted
Fridays:
Feb. 2, 9, 16, 23, Mar. 2, 9, 16, 23, 30, Apr. 6,
13, 20, 27, May 4, 11, 18, 25...and weekly until the migration is
complete!
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June
1 , 2007
The migration is reaching the end! The record numbers of
monarchs reporting during the past two weeks show the population
is building. Play the animated map back
and forth
to see the impact! Also this week: A true
survival story... >>.
Photo:
Mary Ramsower |
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May
25, 2007
Just a short update today to share the latest monarch migration
maps and data. Take a closer look at the map today. Have the
monarchs been seen in their entire range? Where will they
be sighted next? Explore and read the comments of monarch
spotters as the next generation is finding milkweed to begin
the life cycle once more in the north. |
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May
18, 2007
What a week! Strong, gusty winds blew from the south and the
monarchs must have hitched a ride. All at once many appeared
in Iowa, Minnesota, Wisconsin, Michigan and Ontario. The northernmost
monarch is now approaching latitude 47 N. Also this
week: How does a monarch get out of the chrysalis?
Use your powers of observation to explore that question with
a series of time-lapse photos. Photo:
Elizabeth Howard |
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May
11, 2007
This week's big news: Monarchs have crossed into Canada! It
was a slow week otherwise, but we predict the big surge will
occur within the week. Also this week: Watch
a caterpillar become a chrysalis in slow motion. What will
happen to its eyes, mouth, and head? And where will the beautiful
gold spots of the chrysalis come from? Take a look! Photo:
Elizabeth Howard |
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May
4, 2007
The quiet was typical for the first week of May. Monarchs
were few and far between --and they were far flung! Why would
a monarch be sighted in South Dakota before Iowa or Nebraska,
for example? And what about the monarch sighted in Massachusetts?
Also this week, take a trip to the milkweed patch to find
monarchs. Photo: Elizabeth
Howard |
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April 27, 2007
What an odd migration map! A narrow string of sightings
stretches across Illinois all the way to central Wisconsin,
where an early monarch was spotted on April 20th. How
early is this monarch and why is it so far ahead of other
Midwest sightings? Also, sightings this week of many fresh-winged
monarchs mean the new generation is on the wing. Take a
close look at monarch wings today! Photo:
Wayne Kryduba |
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April 20, 2007
The monarchs from Mexico are laying their last eggs and
living their last days. It's fitting that Earth Day comes
every year when a new monarch generation is replacing the
old. A single monarch can lay hundreds of eggs. This week,
find out how many generations it would take to reach a billion
butterflies--and explore why we don't have a billion! Photo:
Elizabeth Howard |
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April 13, 2007
Dangerously cold! The migration froze in place this week.
So did fresh spring flowers and tiny green leaves as freezing
temperatures moved across much of the monarch's breeding
range. How were monarchs effected by this record-breaking
cold? Also this week: Answers from the Expert, an interview
with Dr. Brower —and the egg-count from Ms. Monarch! |
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April 6, 2007
Take a look at the map! It was a warm week and the migration
advanced another 300 miles! It's been an unusually warm
spring in the Midwest and the monarchs moved in early. Explore
how migration and temperature are related. The monarch's
spring migration is unusual because it takes at least two
generations to complete. When will the new generation be
born and continue the journey that their parents began? |
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March
30, 2007
The butterflies advanced nearly 250 miles to the north and
200 miles to the east this week, in the most dramatic move
of the season. Every spring we rely on hundreds of observers
to track the monarch's migration. These observers expand
the eyes and ears of scientists in ways not possible before
— does everybody know a monarch when they see one?
Let's practice butterfly identification! |
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March
23, 2007
The migration has moved into two new states — Louisiana
and Arkansas! Monarchs are mostly GONE from the colonies
now, and scientists are following them northward to find
the pathway across Mexico. Hummingbirds arrive each spring
at the same time monarchs do. Although one is a bird and
the other a butterfly, they are heading north for the same
reasons. What can we learn by comparing their migrations?
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March
16, 2007
The monarchs are pouring out of Mexico now and they're trickling
into Texas. The migration's leading edge has reached 30N.
Where do you think they will appear next? New Mexico? Oklahoma?
Arkansas? (You might be surprised!) This week: Why do the
monarchs travel where they do? What drives the pace and
direction of the migration?
Photo: Dr. Lincoln Brower,
Sweet Briar College |
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March
9, 2007
Here come the monarchs! Spring migration begins every March
in a flurry. The monarchs are in a race against time. They
can't stay in Mexico any longer — but they can't move
north too quickly either. The timing of their spring migration
must be precise. How do they know when to leave, and why
do they go now?
Photo: Dr. Lincoln Brower,
Sweet Briar College |
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March
2 , 2007
It's
March! The days are getting longer and temperatures rising
in the monarch colonies in Mexico. "Within the month—a
relatively short time—these butterflies will vacate
their winter haunt and begin the recolonization of North
America." Get ready to track the spring migration!
Also: Find out who's been eating monarchs in Mexico this
winter...
Photo:
Dr. Lincoln Brower, Sweet Briar College
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February
23, 2007
It's
too early for spring migration, but monarchs are on the
move! They are spreading down the arroyos in search of water.
These early signs of colony break-up mean the wintering
season is coming to a close. Monarch butterflies have been
in Mexico since November. Can they survive all winter with
little or no food at all? Let's explore!
Photo:
Don Davis
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February
16, 2007
It
can be warm during the day at the monarch's winter home
in Mexico, but at night it's as cold as the inside of your
refrigerator! Most people are puzzled when they hear this.
Why do monarchs migrate across the continent to spend the
winter in a place that is cold?
This
week, a trip inside a monarch colony to see how the cold
affects the monarchs—and how the forest protects them.
Photo:
Dr. Lincoln Brower, Sweet Briar College |
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February
9, 2007
Why do Monarchs fly to Mexico from
across the continent? Each week we're exploring a piece
of the puzzle. It's
the dry season there now. Where can Monarchs find the water
they need? "I have a series of pictures that tell a
neat story," begins Dr. Lincoln Brower."
Photo:
Dr. Lincoln Brower, Sweet Briar College |
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February
2, 2007
Welcome to Journey North's spring's migration season! It's
been three months since the first monarchs reached their winter
home in Mexico after their long, fall migration. How many
monarchs survived the trip? Today's report explores that important
conservation question. Read on!
Photo:
Elizabeth Howard
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Welcome
to Journey North's spring monarch migration season!
Winter
>>
We begin each year while the monarchs are still
at the overwintering sites, deep in central Mexico. The
monarch’s story of survival during the winter months
in Mexico is as spectacular as their incredible migration.
During the first weeks, we’ll look at the monarch’s
winter habitat and their adaptations for survival.
Spring
>>
Get ready to track the migration! The monarchs head north
in March. Find
out how to report your sightings and track the migration
on real-time migration maps. |
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