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Whooping
Crane Migration Update: April 3, 2009 |
Today's
Report Includes:
- Just
Three Juveniles
Still in Florida >>
- More
Endangered
Species Math: How Many Left? >>
- Photo
Story: Contest for the Female >>
-
Links: This
Week's Crane Resources >>
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Photo
Sara Zimorski
Tracking
the group of four that left Chass, Eva got to their Illinois
location April 1. She found that this crane had separated
from the
others.
Which
crane? Use the band
colors to identify.
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Just
Three Juveniles
Still in Florida!
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Map
and Track >> |
Rising
up and catching their first thermal, juveniles
805, 812, 813, 826, 828, 829 and 830 left St. Marks together on March
30! Trackers got a PTT reading
from #813 in Alabama on March 31. Is the whole group still together?
Trackers
think so, and are racing to catch up with them to see. Still
at the Chass release site in Florida are three juveniles: #803, 824,
and 827.
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March
30, 2009
Hear
Bev (with a bad cold) describe the magnificent departure of
the "St.
Marks 7" on
their first journey north. >>
Audio clip thanks to interviewer Mark Chenoweth
of Whooper
Happenings!
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|
News: Reports
and Photos from
the Field |
Lesson:
Signals From the Sky: About Those PTTs >> |
Video by Joel Jorgenson
Enjoy
video
of first family to leave Texas, on their March 28 migration stopover! |
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Photo
Sara Zimorski, ICF
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Western
Flock News>>
Martha Tacha (USFWS) reports
two sightings of cranes that have begun migration.
Tom Stehn's census flight
in Texas is set for next week. What is the latest news? >>
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The
Finish Line >>
46
Whooping cranes from the Eastern flock are back in Wisconsin! Their
migration is way ahead of the larger Western Flock. (It's
still too cold to arrive in
Canada.)
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Eastern
Flock News>>
Sara
shares the latest news on the Chass juveniles and the Wisconsin
arrivals. One
especially exciting return is crane #727. (Why? Find out here: >> )
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Journal
Topic: Number
of Days on the Wintering Grounds |
Calculate
and Compare: Days
Spent on Wintering Grounds 2001-2009 >> |
Four
of the "Chass 7" began migration March 24. The St. Marks
7 all departed together March 30.
- How
many days did the four departed cranes spend on the wintering grounds
at Chassahowitzka NWR? (They arrived Jan.
23, 2009.)
- How many
days did the "St. Marks 7" spend on the wintering grounds at St.
Marks NWR? (They arrived Jan.
17, 2009.)
- In the
flock's 8-year history, how do these two
wintering times compare with other first cranes to depart
on spring migration? See
Chart >> and answer the questions at the bottom
of the chart.
Write your
responses in your Journal. >>
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More
Endangered Species Math: How Many Left? |
Read
Graph >> |
Watching
over the last remaining
wild migratory flock of Whooping cranes
in Texas, Tom Stehn has told us that 2008-2009 was the
worst winter on record in terms of bird deaths for this flock. He estimates
21 cranes died at Aransas NWR this winter. The combination of
mortality at Aransas and the losses during spring, summer and fall
resulted in approximately
21 percent of the Central Flyway flock being lost in the last 12 months.
- If 270 arrived, how many might we expect
to come
north
this
spring?
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Western
Flock Numbers
Crane numbers
in this flock have dropped _____ times since the all-time low of _____
birds. (See graph.) |
Photo
Story: Contest
for the Female |
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Male
#307
tried to dance with W601 (the
new flock's first and only wild-born bird) in
spring 2008. They hung out together for a while.
Photo Sara Zimorski |
But
soon she had another boyfriend: #310.
Photos
Richard Urbanek, ICF
|
Last
April W601 (with #310) made her first nest! She was still too
young to lay eggs, but it was good practice. #310 was still
with
her
when they
migrated home in March. |
What
next? In the meantime, male #307 is
also back on Necedah NWR. Sara Zimorski told us, "Apparently
#307 has been trying (and may have succeeded) to steal W601 away from
#310. Last year #307 and
W601
were hanging out together before #310 came along so we'll see what
happens." (Female
#721 was
#307's
unofficial mate last summer. She migrated with him last fall, but
she was found dead in Putnam County, Florida on January 3, 2009.) What
do you think will happen next?
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This
Week's Crane Resources |
- Audio
Clip: Bev Describes the Chass 7's Spring Departure >>
- Video
Clip: Whooper Family at Migration Stopover >> (Joel
Jorgensen, Nongame Bird Program Manager at NE Game and Parks Commission)
- Lesson: Signals
From the Sky: About Those PTTs >>
- Math:
Number of Days on the Wintering Grounds >>
- Graph >>
- Identify
Using Band Colors: Quick Color Codes for the Class of
2008 >>
- Mapping
and Record Keeping: Track the Migration >>
- Meet
Student Craniacs: Classrooms in Action >>
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The
Next Whooping Crane Migration Update Will Be Posted on
April 10, 2009.
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